(n.) A trifoliate plant used as a national emblem by the Irish. The legend is that St. Patrick once plucked a leaf of it for use in illustrating the doctrine of the trinity.

armory badge badge of office badges baton blazonry brassard button cap and gown chain chain of office class ring clover cockade collar cross decoration deuce-ace dress eagle emblems ensigns fasces figurehead fleur-de-lis hammer and sickle heraldry insignia lapel pin leash livery mace mantle markings medal mortarboard old school tie pin regalia ring rose school ring set of three sigillography skull and crossbones sphragistics staff swastika tartan tercet ternary ternion terzetto thistle three threesome tie tierce trefoil trey triad trialogue triangle tricorn trident triennium trihedron trilogy trimester trine trinity trinomial trio triphthong triple crown triple threat triplet triplopy tripod triptych trireme triseme triskelion trisul triumvirate triunity trivet troika uniform verge wand