nut

詳細解釋：

nut

n.（名詞）

An indehiscent, hard-shelled, one-loculated, one-seeded fruit, such as an acorn or a hazelnut.
堅果：一種不開裂，硬殼，單隔室，單種子的果實，如橡樹果實或榛子
A seed borne within a fruit having a hard shell, as in the peanut, almond, or walnut.
堅果種子：生長在有硬殼的果實之內的種子，如花生、杏或核桃
The kernel of any of these.
堅果仁：這些堅果的仁
Slang
【俚語】
A crazy or eccentric person.
瘋子，怪人：瘋狂或古怪的人
An enthusiast; a buff:
狂熱者：狂熱的人；入迷的人：
例句：
a movie nut.
電影迷

Informal A difficult endeavor or problem:
【非正式用語】 難事，難題：
例句：
Painting the closet was a tough nut to crack.
給壁櫥刷漆不是件容易事

Slang The human head.
【俚語】 腦袋，頭
Music
【音樂】
A ridge of wood at the top of the fingerboard or neck of a stringed instrument, over which the strings pass.
琴弓：指板頂部或弦樂器琴勁處木質的凸起部分，琴弦繞在上面
A device at the lower end of the bow for a stringed instrument, used for tightening the hairs.
鬆緊旋紐：琴弓尾端的裝置，用於鬆緊金屬絲
A small block of metal or wood with a central, threaded hole that is designed to fit around and secure a bolt or screw.
螺母，螺帽：中部有螺紋用於與螺栓或螺釘相配合的小塊金屬或木頭
Slang
【俚語】
The cost of launching a business venture.
本錢：開展生意所需的費用
The operating expenses of a theater, theatrical production, or similar enterprise:
經費：劇院、戲劇製作和相似事業的運作費用：
例句：
.The[theater] has simply failed to attract enough paying customers per week to meet its nut. (Variety)
.［劇院］ 沒能每周吸引足夠的顧客以解決經費問題. (種類)

nuts Vulgar Slang The testicles.
nuts 【粗俗用語】 【俚語】 一對 *
v.intr.（不及物動詞）
nut.ted,nut.ting,nuts
To gather or hunt for nuts.
采乾果，拾堅果

來源：
Middle English nute
中古英文 nute
from Old English hnutu
源自 古英文 hnutu

【引伸】
nut.ter
n.（名詞）