harlequin UK /ˈhɑːlɪkwɪn/US /ˈhɑɹlɪkwɪn/noun 4adjective 2verb 2forms 3 noun4 •A pantomime fool, typically dressed in colorful checkered clothes, used as a stock character in commedia dell'arte and other genres.Motives are like harlequins—there is always a second dress beneath their first. — 1831 •A greenish-chartreuse color. •(informal) A harlequin duck. •Any of various riodinid butterflies of the genera Taxila and Praetaxila. adjective2 •Brightly colored, especially in a pattern like that of a harlequin clown's clothes. •Of a greenish-chartreuse color. verb2 •To make sport by playing ludicrous tricks. •To remove or conjure away, as if by a harlequin's trick.And kitten, if the humour hit / Has harlequin'd away the fit. — 1737 formsharlequined · harlequining · harlequins