do in
verb1
Colloquial To kill or end; to defeat.
- By the eighth mile, I was sure that finishing the 10-mile hike would do me in.
- We very nearly did in an entire keg of beer that weekend.
2 more examples
- So if Sunday you're free why don't you come with me and we'll poison the pigeons in the park And maybe we'll do in a squirrel or two while we're poisoning pigeons in the park1959, Tom Lehrer, “Poisoning Pigeons In The Park”, in An Evening Wasted With Tom Lehrer:
- Slasher fans rejoiced—for a couple years anyway, until the boom swiftly faded, done in by the same causes that fell so many other eruptions of a style or genre, of any medium: The host of imitators are never as good as what inspired the affection in the first place.2017 October 27, Alex McLevy, “Making a Killing: The Brief Life and Bloody Death of the Post-Scream Slasher Revival”, in The A.V. Club, archived from the original on 05 Mar 2018:
2
Colloquial To exhaust, to tire out.
- I’m off to bed. I’m completely done in.
- I'm exhausted! That 20-mile hike has done me in.
3
Colloquial To damage or injure.
- I’m off work at the moment; I’ve done my back in.
5
Colloquial To eat.
- I can do in a dozen eggs.