[bang-koh, bahng-] 
noun, plural -cos, verb | 1. | a declaration made by a bettor in certain gambling games, as baccarat and chemin de fer, indicating a bet matching the full amount in the bank, to the exclusion of all previous lower bets: often used as an interjection. |
| 2. | to make such a declaration. |
| ban·co (bāng'kō, bäng'-) n. pl. ban·cos A bet in certain gambling games for the entire amount the banker offers to accept. interj. Used to announce a bet in certain gambling games. [Italian, variant of banca, from Old Italian; see bank2.] |
koʊ