knee-jerk reflex

Noun knee-jerk reflex has 1 sense

• knee-jerk reflex(n = noun.act) knee jerk, patellar reflex - a reflex extension of the leg resulting from a sharp tap on the patellar tendon; Array
is a kind of inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex