n. Anything that hangs down from a point of attachment and is free to swing.n. In mech., a body so suspended from a fixed point as to move to and fro by the alternate action of gravity and its acquired energy of motion.n. A chandelier or lamp pendent from a ceiling.n. A guard-ring of a watch and its attachment, by which the watch is attached to a chain.n. A pendulum that at some point of its path closes a circuit, this in turn either reporting the beats of the pendulum at distant stations for time-comparisons, or directly controlling a number of clocks. See electric clock, under clock.n. See the adjectives.n. A pump in which the reciprocating motion of the piston is controlled by a pendulum.n. A pump the handle of which swings on either side of its center of suspension.n. A pendulum consisting of a spherical bob suspended from a cord or wire.