run in

noun, adj, verb — 14 senses

run-in

nounalso spelled run-in

/ˈɹʌnˌɪn/

Etymology Derived from the verb run into. For the meaning "end-phase", it presumably comes a marathon race, where in the final part the runners run into the stadium and complete a lap.

1

An encounter; a scrape or brush, especially one involving trouble or difficulty.

  • During that time he had two more run-ins with the law. One involved the sale of stolen property. The other was for a series of hot checks.2004, Pamela Morsi, Suburban Renewal, page 95:
2

The end-phase of a competition etc.

  • Yahoo Sport's Leicester City blogger Helen Nutter gets ready for the Premier League run-in knowing her side - incredibly - still have a great chance of being crowned champions
  • But despite its plague of tunnels, the run-in on this route is of unusual interest to the locomotive enthusiast: besides the hordes of self-important saddle-tanks shunting in the extensive yards, there was at one time the chance of seeing those slender little North London engines, with their large outside cylinders and no visible storage place for coal, and also an occasional South Eastern locomotive sporting a lot of polished brass.1951 October, R. S. McNaught, “Lines of Approach”, in Railway Magazine, page 704:
3

A sudden compression between two coupled railcars when the hinder one is moving faster than the fore one.

  • Brake pipe pressure reduction rates of over 30 psi/sec lasting for about 15 milliseconds were created by harsh slack run-ins.1990, F. G. Carlson, Undesired Emergency Brake Applications, Association of American Railroad Research and Test Department:
  • Researchers noted no unusual events (e.g., knuckle breaks) or notable instances of significant slack action or run-ins/run-outs at the lead locomotive during the test.2024, Srini Swamy, Graydon F. Booth, Anand Prabhakaran, Very Long Trains: Moving Train Tests, Federal Railroad Administration:

run in

adj

› Alternative form of run-in (adjective)…

1

Communications, Editing, Journalism, Literature, Media, Publishing, Typography, Writing Adjective, Error misspelling, Participle, Usually (not comparable) Having been run in before or behind previous text.

  • These headings are run in because a free-hanging style would just be a waste of column inches.
  • One of the best headings for saving space is the heading that is run in.1956, Daniel Melcher, Nancy Larrick, Printing and Promotion Handbook:
4 more examples
  • Third subheadings begin paragraphs (are indented and run in).1976, American Institute of Physics, Editorial Handbook, page 17:
  • You can select how far you want subentries indented, how many lines between each entry and alphabetical block, and whether you want the final index indented (each sub- and sub-subheading indented under its parent) or run in (subheadings in paragraph form under the main heading).1985 April 16, Charles Anderson, “The Ins and Outs of Indexing”, in PC Mag, volume 4, number 8, page 322:
  • Heading levels 3 through 7 are run in headings — the text that follows the heading appears on the same line as the heading.1987, Rachel Morgan, Henry McGilton, Introducing UNIX System V, page 333:
  • Secondary headings are flush left, in regular type, and capitalized headline style. Tertiary headings are run in at the beginning of a paragraph, in bold type, capitalized sentence style, and followed by a period.2019, Editorial staff, “Guide to Authors”, in Nagoya Journal of Medical Science, archived from the original on 23 Dec 2021:
2

Engineering, Mechanical, Mechanical engineering, Natural sciences, Physical sciences Adjective, Error misspelling, Participle, Usually (sometimes comparable) Having been run in to seat the parts.

  • The engine should be well run in before its heavy working life begins.
  • Behaviour patterns now thoroughly "run in", and financial stringencies, appear to impose sharp limits on the prospects of success here.1978, European Conference of Ministers of Transport, International Symposium on Theory and Practice in Transport Economics The Contribution of Economic Research to Transport Policy Decisions, page 64:
3 more examples
  • In addition to the above, the systems analyst should go on shift with the users for the first few days or longer until the system is thoroughly run in.1978, John E. Bingham, Garth W.P. Davies, A Handbook of Systems Analysis, page 35:
  • Now that the engine is thoroughly run in, our overall fuel economy is creeping toward the high 22-mpg range.1993 December, T.S., “Long-Term Test cars”, in Popular Mechanics, volume 170, number 12, page 112:
  • Under no circumstances run a new motor at high speed until it has covered several hundred miles and is thoroughly “run in.”2012, Victor W. Page, Early Motorcycles: Construction, Operation and Repair, page 487:

run in

verb
7 senses
  1. 1To arrest; (especially) to track down and arrest.
  2. 2To use new machinery at less than full speed, preventing damage.
  3. 3To start a new regime slowly.
  4. 4To score (a try).
  5. 5To insert (a word, etc.) without making a line break or…
  6. 6To alter the position of matter to fill vacant space.
  7. 7simple past and past participle of run in
1

Informal To arrest; (especially) to track down and arrest.

Chiefly passive voice

  • The guys who robbed the bank last week have finally been run in.
2

UK To use new machinery at less than full speed, preventing damage.

  • I have to drive slowly for the first 1,000 miles to run the engine in.
  • It was run in by Ranochan of Polmadie on the forenoon slow to Carlisle and the afternoon slow back to the North.1959 February, A. G. Dunbar, “The "Dunalastair I" 4-4-0s of the Caledonian”, in Trains Illustrated, page 87:
3

Figuratively To start a new regime slowly.

4

Ball games, Games, Hobbies, Lifestyle, Rugby, Sports To score (a try).

  • Toeava went over unopposed to stretch his side's lead but Japan got on the scoreboard on 56 minutes, wing Hirotoki Onozawa intercepting an attempted offload from Slade, who had a rather flaky game, and running in from the All Blacks' 10m line.2011 September 16, Ben Dirs, “Rugby World Cup 2011: New Zealand 83-7 Japan”, in BBC Sport:
5

Media, Printing, Publishing, Typography To insert (a word, etc.) without making a line break or new paragraph (so that it is not free-hanging).

  • With these subsections, it is better to run their headings in.
6

Media, Printing, Publishing To alter the position of matter to fill vacant space.

7

Participle, Past simple past and past participle of run in

run-in

adj

Etymology Derived from the verb run in.

1

Communications, Editing, Journalism, Literature, Media, Publishing, Typography, Writing Adjective, Error misspelling, Participle, Usually (not comparable) Having been run in before or behind previous text.

  • These headings are of the run-in type because a free-hanging style would just be a waste of column inches.
2

Engineering, Mechanical, Mechanical engineering, Natural sciences, Physical sciences Adjective, Error misspelling, Participle, Usually (sometimes comparable) Having been run in to seat the parts.

  • A well run-in engine is likelier to consume less crankcase oil over the course of its working life.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — authors: page histories for run-in and run in.