buck

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Buck

(bŭk),
Gordon, U.S. surgeon, 1807-1877. See: Buck extension, Buck fascia, Buck traction.

buck

Regional drug slang
To shoot someone in the head.

buck

1. adult male goat. Unlikely to be kept for any purpose other than an active breeding life, and then only at a distance.
2. breeding male of most small, wild ruminant species, including roe, fallow, muntjac and Chinese water deer. In larger deer species is called bull.
3. the violent actions performed by a horse attempting to dislodge a rider. In rodeo contests steers and bulls may also be engaged in riding-bucking contests with human riders.