pacifier gag UK /ˌpæsɪfaɪəˈɡæɡ/US /ˌpæsɪfaɪɚˈɡæɡ/ noun1 •A ball gag with a pacifier attached to its rubber or silicone sphere.No sooner did she begin complaining than a large pacifier gag was strapped into her mouth. All she could now do was suck on the large nipple and sob softly to herself. — 1994 formspacifier gags