'Pick off' definitions:

Definition of 'pick off'

From: WordNet
verb
Shoot one by one
verb
Pull or pull out sharply; "pluck the flowers off the bush" [syn: pluck, tweak, pull off, pick off]

Definition of 'Pick off'

From: GCIDE
  • Pick off \Pick" off\, v. t.
  • 1. (Baseball) to put out a baserunner who is off base by tagging him/her, especially by a quick throw from the pitcher or catcher. [PJC]
  • 2. to shoot so as to kill or disable, especially one by one from a position or in a situation where the target is unable to return fire at the shooter; -- used commonly of sniper fire. "The sniper picked off a dozen passersby from the tower before he was shot down by police." [PJC]
  • 3. (Football) to intercept (a pass). [PJC]

Synonyms of 'pick off'

From: Moby Thesaurus