noun
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a ring or other small ornament for the lobe of the ear, either passed through a hole pierced in the lobe or fastened with a screw or clip; an ear-ring.
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a badge of honour worn by scholars.
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a loop formed in a rope, cord, etc. by means of a slipknot so that the loop tightens as the rope is pulled; a noose.
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either or both of the curved lines, ( ), used to mark off parenthetical words, etc. or to enclose mathematical or logical symbols that are to be treated as a single term; a bracket; a parenthesis.
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a plane figure bounded by a single curved line, every point of which is equally distant from the point at the centre of the figure; a circle.
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a circular band, as of metal, plastic, etc., used for some special purpose; a ring.