trossulus Save DMLBS 1 trossulus [CL], rider, horseman, (as term of contempt for a man) dandy. ~ae, equites GlC T 252; subsellium, sedes. Persius ‘per subsellia levis trosulus exultat’ [Persius 1. 82] Osb. Glouc. Deriv. 561; a physbuttocke, ~us Levins Manip. 159. 2 trossulus v. trussellus