1. n. an athlete. (see also strap, jockstrap. Now of either sex.) The jocks are all at practice now.
2. n. an athletic supporter (garment). Somebody dropped a jock in the hall.
rock-jock
n. a mountain or rock climber. The sides of every mountain are covered with rock-jocks.
veejay
and VJ and video jock
n. a video jockey; a host on a television program that features music videos. (see also disk jockey.) Sally tried out for the veejay job, but she looked too old and stuffy for that kind of work.