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a small fluid-filled sac located between movable parts of the body especially at joints

a small fluid-filled sac located between movable parts of the body especially at joints

A closed sac or pouch containing fluid, found, or formed as a result of pressure, over an exposed and prominent part, or where a tendon plays over a bone.

A pouch or sac usually separating parts of skeleton.

A sac-like cavity; a sac filled with viscid fluid at joints to prevent friction.

Pl. bursae. A sac or pouch.