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Definition of Cercus
1. n. See Cercopod.
Definition of Cercus
1. a sensory appendage of an insect [n CERCI] : CERCAL [adj]
Medical Definition of Cercus
1. 1. A stiff hairlike structure. 2. A pair of specialised sensory appendages on the 11th abdominal segment of most insects. Origin: Mod. L., fr. G. Kerkos, tail (05 Mar 2000)