latch
[lætʃ]
n.
门闩;
弹簧锁;
vt.& vi.
闩上;
用碰锁锁上（门等）;
抓住，占有;
例句:
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You left the latch off the gate and the dog escaped.
你没把门闩插上，所以狗跑了。
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They all broke the latch and entered the apartment.
来自WSJ
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Foley followed Albert through the gate, taking care to close the latch.
福利跟着艾伯特穿过大门，特意将门闩插好。
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Standing on tiptoe he could just reach the wooden latch.
来自Aldous Huxley
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Let yourself in; the door's on the latch.
你自己进来吧，门没上锁。
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They latch onto anything they can to complain about it.
来自SA