depthen

verb

depthen

verb

Etymology From depth + -en.

1

Archaic To increase the depth of; make deep or deeper

And in 1770, a Mr. John Gayford went to Holland to buy an engine to depthen the haven.1869, The East Anglian, volume 3:
It Is equipped with a 36 In bucket that depthens and clears the ditch of debris.1956, Street Engineering, volume 1, page 43:

Synonyms: deepen

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.