Search Result for "ball-and-socket joint":
Wordnet 3.0

NOUN (2)

1. a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone;
[syn: ball-and-socket joint, spheroid joint, cotyloid joint, enarthrodial joint, enarthrosis, articulatio spheroidea]

2. a joint that can rotate within a socket; 



WordNet (r) 3.0 (2006):

ball-and-socket joint
    n 1: a freely moving joint in which a sphere on the head of one
         bone fits into a rounded cavity in the other bone [syn:
         ball-and-socket joint, spheroid joint, cotyloid
         joint, enarthrodial joint, enarthrosis, articulatio
         spheroidea]
    2: a joint that can rotate within a socket