/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]