from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative spelling of ball-and-socket joint.
from the GNU version of the Collaborative International Dictionary of English
- n. a joint in which a ball moves within a socket, so as to admit of motion in every direction within certain limits.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a joint that can rotate within a socket
- n. a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone
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