latch

/lætʃ/ (bre, ipa) · /lætʃ/ (ame, ipa) · /ˈlach/ (ame, mw)

latch — noun

  • latchsingular
  • latchesplural

1. a short bar of metal or wood, attached to one side of a door or to a gate, that

1.名詞B2
釋義

a short bar of metal or wood, attached to one side of a door or to a gate, that drops into a slot on the frame to hold it shut; you lift the bar in order to open it

例句

Harper lifted the rusty latch on the garden gate and pushed it open.

lift the latch on [gate]

The wind blew the kitchen door against the latch with a sharp click.

subject = inanimate (wind)

同義詞
  • catch

    any small fastener that holds two parts together; broader than latch

  • bolt

    a sliding bar that locks a door; firmer than a latch and often used with a key

  • hasp

    a hinged metal strap that fits over a staple, used with a padlock

文法句型

the latch on [door/gate]

lift/drop the latch

用法筆記

Subject of 'lift' / 'drop' / 'fasten' is usually a person operating the door; subject of 'click' / 'slip' is the latch itself.

常見錯誤

He locked the latch with a key.
He fastened the latch.
💡a basic latch holds a door closed but does not lock it; only a lock with a key locks.

2. the position of a door when its latch is engaged but the door is not locked, so

2.名詞C1
釋義

the position of a door when its latch is engaged but the door is not locked, so that anyone can simply push it open

例句

Tamar left the back door on the latch so her brother could come in late.

leave [door] on the latch

In small villages, many people leave their front door on the latch all day.

on the latch with plural subject

同義詞
  • unlocked

    states only that no lock is engaged; does not imply the latch is dropped

  • ajar

    the door is slightly open, whereas 'on the latch' means closed but not locked

反義詞
  • locked

    secured with a key or bolt; the opposite state

文法句型

leave the door on the latch

用法筆記

Distinguish from sense 1 (the object): here 'latch' names a state, used only inside the fixed phrase 'on the latch'. Common in British English, less so in American English.

常見錯誤

I left the door in the latch.
I left the door on the latch.
💡the fixed preposition is 'on', not 'in'.

3. a kind of door lock that snaps shut by itself when the door is closed and which

3.名詞C1
釋義

a kind of door lock that snaps shut by itself when the door is closed and which you can only open from the outside using a key

例句

Christopher fitted a new latch to the front door after the burglary last month.

fit a latch to [door]

The flat had only a simple latch, with no extra bolt for night-time security.

have a latch + no bolt

同義詞
  • nightlatch

    everyday name for the same device, especially on a front door

  • Yale lock

    trademark name used generically for this kind of spring-operated door lock

文法句型

fit a latch

[door] has a latch

用法筆記

Distinguish from sense 1 (a bar that drops into a slot): this sense names a self-closing key-operated lock, often fitted to the front door of a flat or house. Sometimes called a 'nightlatch' or 'Yale lock' in everyday speech.

常見錯誤

I unlocked the latch from the inside with my key.
I unlocked the latch from the outside with my key.
💡this kind of latch opens with a key only from outside; from inside you turn a knob.

latch — verb