名詞 bolt:

1. a discharge of lightning accompanied by thunder
   同義詞：thunderbolt, bolt of lightning
2. a sliding bar in a breech-loading firearm that ejects an empty cartridge and replaces it and closes the breech
3. the part of a lock that is engaged or withdrawn with a key
   同義詞：deadbolt
4. the act of moving with great haste
   同義詞：dash
5. a roll of cloth or wallpaper of a definite length
6. a screw that screws into a nut to form a fastener
7. a sudden abandonment (as from a political party)

動詞 bolt:

1. move or jump suddenly
2. secure or lock with a bolt
3. swallow hastily
4. run away; usually includes taking something or somebody along
   同義詞：abscond, absquatulate, decamp, run off, go off, make off
5. leave suddenly and as if in a hurry
   同義詞：run off, run out, bolt out, beetle off
6. eat hastily without proper chewing
   同義詞：gobble
7. make or roll into bolts

副詞 bolt:

1. in a rigid manner
   同義詞：rigidly, stiffly
2. directly
   同義詞：bang, slap, slapdash, smack

1. The gate bolts on the inside.
   這大門是從里面閂上的。
2. We need an eye bolt to fit this valve.
   我們需要一個有眼螺栓來固定這個閥門。
3. The frightened boy bolted all the doors and windows.
   這個嚇壞了的孩子閂上了所有的門窗。

bolt

n.（名詞）
A bar made of wood or metal that slides into a socket and is used to fasten doors and gates.
門閂，插銷：用木或金屬制成的條，插入閂中用于固緊門
A metal bar or rod in the mechanism of a lock that is thrown or withdrawn by turning the key.
鎖簧：鎖上的金屬條或桿，旋轉(zhuǎn)鎖可將其壓進或抽出鎖孔
A fastener consisting of a threaded pin or rod with a head at one end, designed to be inserted through holes in assembled parts and secured by a mated nut that is tightened by applying torque.
螺栓：一種由可穿過的栓或竿構(gòu)成的條形緊固器，一端有頭，用于插進集合部分相應(yīng)的孔，再用配對的螺帽旋緊

A sliding metal bar that positions the cartridge in breechloading rifles, closes the breech, and ejects the spent cartridge.
槍栓，槍機：裝在后槍膛中為子彈定位的滑動金屬條，可關(guān)閉槍膛和輸入將用的子彈
A similar device in any breech mechanism.
栓：在有膛機械中的類似設(shè)備
A short, heavy arrow with a thick head, used especially with a crossbow.
弩箭：一種大頭的短而重的箭，尤與弩連用
A flash of lightning; a thunderbolt.
閃電；霹靂
A sudden or unexpected event:
突發(fā)事件：
例句：
The announcement was a veritable bolt.
這告示是千真萬確的突發(fā)事件

A sudden movement toward or away.
猛沖，逃跑
A large roll of cloth of a definite length, especially as it comes from the loom.
一匹：有一定長度的，尤指當其從織機上卸下來時的一卷布
v.（動詞）
bolt.ed,bolt.ing,bolts
v.tr.（及物動詞）
To secure or lock with or as if with a bolt.
栓住，鎖：用或好象用鎖固定或鎖住
To arrange or roll (lengths of cloth, for example) on or in a bolt.
將布卷成匹，整理布匹：將（例如布）安置或卷在一個栓上
To eat (food) hurriedly and with little chewing; gulp.
匆匆咽下，囫圇吞吃：快速的且很少嚼的吃（食物）；吞食
To desert or withdraw support from (a political party).
退出：從（政黨）中脫離，或不再支持
To utter impulsively; blurt.
脫口而出；急促地說
Archaic To shoot or discharge (a missile, such as an arrow).
【古語】 射：投射或發(fā)出（發(fā)射物，如箭）
v.intr.（不及物動詞）
To move or spring suddenly.
迅速移動，突然跳起
To start suddenly and run away:
驚跑：突然起動且逃跑：
例句：
The horse bolted at the sound of the shot. The frightened child bolted from the room.
聽到射擊聲，馬脫韁逃跑。嚇壞了的孩子從屋子中飛跑出來

To break away from a political party or its policies.
脫黨：從一個政黨脫離出來，拒絕支持黨的政策
Botany To flower or produce seeds prematurely or develop a flowering stem from a rosette.
【植物學】 過早的生子（結(jié)實）：植物未成熟期開花或結(jié)實，從薔薇結(jié)長為花柄

<習慣用語>bolt from the blue
A sudden, shocking surprise or turn of events.
晴天霹靂：事件的突發(fā)或突然轉(zhuǎn)變
來源：
Middle English
中古英語
from Old English [heavy arrow]
源自 古英語 [重箭]

bolt
bolt 2

v.tr.（及物動詞）
bolt.ed,bolt.ing,bolts
To pass (flour, for example) through a sieve.
篩，篩選：用篩子篩選（面粉等）

來源：
Middle English bulten
中古英語 bulten
from Old French buleter
源自 古法語 buleter
from Middle High German biuteln
源自 中古高地德語 biuteln
from biutel [bag, purse]
源自 biutel [袋子，錢包]