Search Result for "razor-sharp": 
Wordnet 3.0

ADJECTIVE (2)

1. very clearly delineated;
- Example: "razor-sharp definition"

2. as sharp as a razor; 



WordNet (r) 3.0 (2006):

razor-sharp
    adj 1: very clearly delineated; "razor-sharp definition"
    2: as sharp as a razor