Wordnet 3.0
ADJECTIVE (1)
1. 
 more than one but indefinitely small in number; 
- Example: "a few roses"- Example: "a couple of roses"[syn: a few(a), a couple of(a)]
WordNet (r) 3.0 (2006):
a couple of
    adj 1: more than one but indefinitely small in number; "a few
           roses"; "a couple of roses" [syn: a few(a), a couple
           of(a)]