1.Slang. To regard (something) as true or real: accept, believe. Slang :swallow. SeeOPINION. 2. To give, offer, or promise a bribe to. Also used with off: bribe. Informal :pay off. Idioms: grease someone's palm (or hand) . SeeCRIMES, MONEY, PERSUASION. 3. To acquire in exchange for money or something of equal value: purchase. SeeGET, MONEY.