n. An athletic supporter worn by men to support the genitals during strenuous exercise.
the GNU version of the Collaborative International Dictionary of English
n. A supporting undergarment for the external genitals worn by men engaging in vigorous athletic sports or strenuous exercise; called also athletic supporter and jock.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a support for the genitals worn by men engaging in strenuous exercise
Word Usage
"Billy, our vehicle man, had lowered the center of gravity for faster turning and fitted the grille with what he called a jockstrap, an armored panel to keep the engine protected."