1. An unfavorable card or token, or undesirable or worthless item used as a prize in a contest or game show (such as Let's Make a Deal).
2. (slang) A feeling of a drug taking hold.
1. (transitive) To make (someone) sleepy or delirious.
2. (intransitive, usually followed by “out”) To become exhausted, sleepy or delirious.
- After two hours of studying, I zonked out.