| ball-and-socket joint |
a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone a joint that can rotate within a socket
출처: wordnet.princeton.edu/perl/webwn
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| ballooning |
flying in a balloon
출처: wordnet.princeton.edu/perl/webwn
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| ballistics |
the trajectory of an object in free flight the science of flight dynamics
출처: wordnet.princeton.edu/perl/webwn
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| ballistocardiograph |
a medical instrument that measures the mechanical force of cardiac contractions and the amount of blood passing through the heart during a specified period by measuring the recoil of the body as blood is pumped from the ventricles
출처: wordnet.princeton.edu/perl/webwn
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| balloon |
small thin inflatable rubber bag with narrow neck ride in a hot-air balloon; "He tried to balloon around the earth but storms forced him to land in China" large tough nonrigid bag filled with gas or heated air become inflated; "The sails ballooned"
출처: wordnet.princeton.edu/perl/webwn
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