English noun: knee jerk | |||
1. | knee jerk (act) a reflex extension of the leg resulting from a sharp tap on the patellar tendon | ||
Synonyms | knee-jerk reflex, patellar reflex | ||
Broader (hypernym) | inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex | ||