do in

present singular third person does in · participle present doing in · past did in · participle past done in

1. colloquialtransitiveTo kill or end; to defeat.

   We very nearly did in an entire keg of beer that weekend.

   3 more examples

   By the eighth mile, I was sure that finishing the 10-mile hike would do me in.

   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 park

   1959, 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

   Synonyms: bump off, do away with, feague, annihilate, bag, baptize, bereave of life, blight

2. colloquialtransitiveTo exhaust, to tire out.

   I’m off to bed. I’m completely done in.

   1 more example

   I'm exhausted! That 20-mile hike has done me in.

3. colloquialtransitiveTo damage or injure.

   I’m off work at the moment; I’ve done my back in.

4. datedslangtransitiveTo rob (someone); to steal or pilfer from (someone).
5. colloquialtransitiveTo eat.

   I can do in a dozen eggs.