Entry 3 senses · 2 variants Webster, 1913 bankroll · IPA /ˈbæŋk.ɹoʊl/ n. v. t. 01 n. the money carried on one's person. 1. the money carried on one's person. 2. one's total supply of money; funds. Syn. roll, wad. 02 v. t. To pay the costs of; as, Who will bankroll the restoration of the former East German economy?. 1. To pay the costs of; as, Who will bankroll the restoration of the former East German economy?.