latch

名词 latch:

1. spring-loaded doorlock that can only be opened from the outside with a key
   同义词：door latch
2. catch for fastening a door or gate; a bar that can be lowered or slid into a groove

动词 latch:

1. fasten with a latch

1. Please leave the door latch shut.
   请把门闩上。
2. This door won't latch properly.
   这门闩不牢。

latch

n.（名词）
A fastening, as for a door or gate, typically consisting of a bar that fits into a notch or slot and is lifted from either side by a lever or string.
门闩：闩，例如门闩，尤指带有一横销，插在槽或狭缝中通过把手或铁链从一头提到另一头
A spring lock, as for a door, that is opened from the outside by a key.
弹簧锁：从外面用钥匙打开的弹簧锁，用于门上的
v.（动词）
latched,latch.ing,latch.es
v.tr.（及物动词）
To close or lock with or as if with a latch.
锁住：用门闩或好象用门闩锁住或关住
v.intr.（不及物动词）
To have or be closed with a latch.
锁：用门闩锁住或被锁住
To shut tightly so that the latch is engaged:
用门闩关紧：关得太紧因而把弹簧锁撞上了：
例句：
a door too warped to latch.
门弯曲的太厉害而锁不上

<习惯用语>latch on to 或
latch onto
To get hold of; obtain:
取得；得到：
例句：
latched on to a fortune in the fur trade.
在皮毛生意中赚了一大笔钱

来源：
Middle English latche
中古英语 latche
from lacchen [to seize]
源自 lacchen [抓]
from Old English lôccan
源自 古英语 lôccan