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combination lock

combination lock

5 2.8
A device that opens only when you enter the right numbers
  • noun
  • /ˌkɒmbɪˈneɪʃən lɒk/
translation icon : candado de combinación
  • I lifted the dust ruffle, looked under, and saw a briefcase, tan, with a combination lock.
  • dial of a combination lock
  • combination lock on the door
  • safe with a combination lock

But we were there and there's a great big security door, big giant metal security door on the front with a combination lock on it.

Examples

Synonyms

lock
vscombination lock
523 1.0

A device that holds doors or containers closed with a key

requires dials or buttons to be set in a specific sequence to open
padlock
vscombination lock
18 2.2

A small metal device with a U-shaped bar that closes to secure doors or gates

uses dials or buttons in a set order rather than relying on a shackle snap

Antonyms

3.5

A lock you open by putting a key in and turning it

Surface Forms

Morphology

combination + lock

The meaning 'a lock opened by a code' is directly and predictably derived from 'combination' (a specific code of digits/keys) combined with 'lock' (a fastening). This noun–noun compositional pattern is common in English and other languages, so a B1 learner who knows both constituents will readily understand it.

Etymology

Combination lock gets its name from how you turn dials to make the right combination of numbers so the little wheels inside can line up. When the numbers are in the correct 'order' the lock will 'open', so it means a lock that opens only with that exact sequence and not with a key.