This meaning refers especially to an adult male deer but can also apply to males of several animal species.
A large buck stood near the trees.
The hunter followed the buck's tracks.
This informal meaning refers to one dollar or another basic unit of currency in casual speech.
The ticket costs ten bucks.
He earned a few extra bucks online.
This figurative meaning refers to acting against accepted expectations, authority, or prevailing movement.
The company bucked the industry trend.
She refused to buck the decision openly.
