Search Result for "heat-seeking missile":
Wordnet 3.0

NOUN (1)

1. a missile with a guidance system that directs it toward targets emitting infrared radiation (as the emissions of a jet engine); 



WordNet (r) 3.0 (2006):

heat-seeking missile
    n 1: a missile with a guidance system that directs it toward
         targets emitting infrared radiation (as the emissions of a
         jet engine)