part of speech: noun

definition 1: a mechanical device for keeping others from opening a door, window, or a safe. Locks are usually opened with a key or a combination.

definition 2: part of a canal that is closed off with gates in order to change the level of water in an area.

  • A lock lets a ship move safely from one level of water to another.

part of speech: verb

inflections: locks, locking, locked

definition 1: to keep closed by means of a lock.

  • We locked all of the doors and windows of our house when we left for vacation.

synonyms: bolt, fasten, padlock

antonyms: unlock

definition 2: to jail or keep in prison (usually followed by “up” or “in”).

  • The sheriff locked up the prisoner.

synonyms: confine, imprison, jail

definition 3: to hold together by joining or linking together.

  • The people at the protest locked arms when the police came.

synonyms: connect, join, link

derivation: lockable (adj.)

part of speech: noun

definition 1: a curl or piece of hair.

  • Mom saved a lock of hair from my first haircut.

synonyms: curl

definition 2: (plural) the hair of the head.

  • Goldilocks got her name from her yellow locks.

synonyms: hair

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