Source : Webster's Revised Unabridged Dictionary (1913)

Bankable \Bank"a*ble\ (b[a^][ng]k"[.a]*b'l), a.
   Receivable at a bank.

Source : WordNet®

bankable
     adj 1: guaranteed to bring a profit; "without bankable stars the
            film script aroused no interest"
     2: acceptable to or at a bank; "bankable funds"