A watch's guard-ring by which it is attached to a chain.
Used to refer to the tendency of a situation to oscillate (between two extremes).
A lamp, etc. suspended from a ceiling.
A body suspended from a fixed support so that it swings freely back and forth under the influence of gravity, commonly used to regulate various devices such as clocks.
A device measuring the time of day by the position of a shadow cast by a pole or plate (gnomon) upon an engraved series of marks.