frag I. \ˈfrag\noun (-s) Etymology: by shortening : fragmentation bomb II. abbreviation 1. fragile 2. fragment; fragmentation III. \ˈfrag\transitive verb (fragged ; fragged ; frag·ging ; frags-s) Etymology:frag, noun : to deliberately injure or kill (one's military leader) by means of a fragmentation grenade • frag·ger\-ə(r)\noun