Wordnet 3.0
VERB (1)
1. 
 confine in or as if in a coop; 
- Example: "she coops herself up in the library all day"[syn: coop up, coop in]
WordNet (r) 3.0 (2006):
coop in
    v 1: confine in or as if in a coop; "she coops herself up in the
         library all day" [syn: coop up, coop in]