athletic supporter


From The Collaborative International Dictionary of English v.0.48:

jockstrap \jock"strap`\ (j[o^]k"str[a^]p), n.
   1. A supporting undergarment for the external genitals worn
      by men engaging in vigorous athletic sports or strenuous
      exercise; called also athletic supporter and jock.

   Syn: jock; athletic supporter.
        [WordNet 1.5]
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