/mol' ee-gard/ [University of Illinois] A shield to prevent tripping of some Big Red Switch by clumsy OR ignORant hands. ORiginally used of the plexiglass covers improvised fOR the BRS on an IBM 4341 after a programmer' s toddler daughter (named Molly) frobbed it twice in one day. Later generalised to covers over stop/reset switches on disk drives and netwORking equipment. [Jargon File]