Wordnet 3.0
VERB (1)
1. 
 put a check mark on or near or next to; 
- Example: "Please check each name on the list"- Example: "tick off the items"- Example: "mark off the units"[syn: check, check off, mark, mark off, tick off, tick]
WordNet (r) 3.0 (2006):
check off
    v 1: put a check mark on or near or next to; "Please check each
         name on the list"; "tick off the items"; "mark off the
         units" [syn: check, check off, mark, mark off,
         tick off, tick]