Wordnet 3.0
VERB (1)
1. 
 examine so as to determine accuracy, quality, or condition; 
- Example: "check the brakes"- Example: "Check out the engine"[syn: check, check up on, look into, check out, suss out, check over, go over, check into]
WordNet (r) 3.0 (2006):
suss out
    v 1: examine so as to determine accuracy, quality, or condition;
         "check the brakes"; "Check out the engine" [syn: check,
         check up on, look into, check out, suss out, check
         over, go over, check into]