- jiggerjigger1 [jig′ər]n.☆ var. of CHIGGERjigger2 [jig′ər]n.1. a person who jigs2.☆ a) a small cup or glass used to measure liquor, containing usually 11/ 2 fluid ouncesb) the quantity of liquor in a jigger3. any device or contraption whose name does not occur to one; gadget4. JIG1 (n. 2)5. Mech.a) any of several devices that operate with a jerky, reciprocating motionb) a device used in making ceramic ware that consists of a rotating molded plaster form that shapes clay into a number of identical plates, bowls, etc.6. Naut.a) a small tackle, as for hoistingb) the smaller, aftermost sail of a yawl or ketchc) JIGGERMASTvt.to adjust, alter, rearrange, or manipulate [to jigger the financial records]
English World dictionary. V. Neufeldt. 2014.