Search Result for "call-in": 
Wordnet 3.0

NOUN (1)

1. a telephone call to a radio station or a television station in which the caller participates in the on-going program; 



WordNet (r) 3.0 (2006):

call-in
    n 1: a telephone call to a radio station or a television station
         in which the caller participates in the on-going program