Search Result for "knee-jerk reflex":
Wordnet 3.0

NOUN (1)

1. a reflex extension of the leg resulting from a sharp tap on the patellar tendon;
[syn: knee jerk, knee-jerk reflex, patellar reflex]



WordNet (r) 3.0 (2006):

knee-jerk reflex
    n 1: a reflex extension of the leg resulting from a sharp tap on
         the patellar tendon [syn: knee jerk, knee-jerk reflex,
         patellar reflex]