marsūpĭum — Lewis & Short
marsūpĭum (-suppium), ii, n., = marsu/pion,
I a pouch, purse (ante- and postclass.): curam marsupii habere, Varr. ap. Non. 142, 1:
nummi aurei in marsupio,Plaut. Rud. 5, 2, 26:
quom inspicio marsupium,id. Men. 2, 1, 29:
exenterare,to empty, id. Ep. 2, 2, 3; Prud. Psych. 600; Alcim. 6, 311.