either of a pair of usually jointed, feelerlike appendages at the hind end of the abdomen of many insects
Origin of cercusModern Latin from Classical Greek kerkos, tail
Either of a pair of appendages located near the tip of the abdomen in many insects and certain other arthropods, usually having a sensory function.
Origin of cercusNew Latin from Greek kerkos tail
From New Latin cercus, from Ancient Greek κέρκος (kerkos, “tail”).