/bʌk; bʌk/
n
1 (pl unchanged or ~s 复数或不变 或作bucks) male deer, hare or rabbit 雄鹿; 雄兔. Cf 参看 stag 1.
2 (US sl derog 俚, 贬) [esp attrib 尤作定语] young Indian or Negro man 年轻的印第安人或黑人.

/bʌk; bʌk/
v
1 (a) [I] (of a horse) jump with the four feet together and the back arched （指马）弓背跳跃.
(b) [Tn, Tn.p] ~ sb (off) throw (a rider) to the ground by doing this （马弓背跳跃）将（骑者）摔于地上.
2 [Tn] (US infml 口) resist or oppose (sb/sth) 反抗、反对（某人[某事]）
*Don't try to buck the system. 不要反对这个制度.
3 (idm 习语) buck one's i`deas up (infml 口) become more alert; take a more serious and responsible attitude 打起精神; 认真负责.
4 (phr v) buck `up (infml 口) hurry 赶紧; 赶快
*Buck up! We're going to be late. 快点儿! 我们快要晚了. buck (sb) up (infml 口) (cause sb to) become more cheerful （使某人）高兴起来, 打起精神来
*The good news bucked us all up. 大家听了这个好消息都高兴起来.
* Buck up! Things aren't as bad as you think. 打起精神来! 事情并非像你想的那么糟.

/bʌk; bʌk/
n (US infml 口) US dollar 美元. =>App
4 见附录4.

/bʌk; bʌk/
n
1 object formerly placed in front of a player whose turn it was to deal in poker （旧时扑克牌戏中, 轮到某牌手做庄时, 置于其前面的）庄家标志.
2 (idm 习语) the buck stops `here (catchphrase 警语) responsibility or blame is accepted here and cannot be passed on to sb else 责无旁贷（承担责任而不推诿给别人）. pass the buck => pass2.

A hay buck, or "bucking hay", is a type of manual labor where hay bales, usually 85 lb. to as much as 150 lb.