from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The reflex which causes a bent knee to kick when the tendon below the patella (kneecap) is tapped.
from the GNU version of the Collaborative International Dictionary of English
- n. See Knee jerk, under Knee.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a reflex extension of the leg resulting from a sharp tap on the patellar tendon
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