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REFERENCE

helmet

n.
US //ˈhɛɫmət// UK //hˈɛlmɪt// hel·met
  1. 1 protective headgear (n.)
    A2 Elementary

    a hard hat you wear to protect your head from injury.

    a piece of protective equipment worn on the head to prevent injury from impact, falling objects, or accidents.

    Example

    You must wear a helmet whenever you ride your bicycle on the road.

    Example

    Safety regulations require all personnel to wear a reinforced helmet while present on the construction site to mitigate the risk of head injuries.

  2. 2 anatomical/botanical part (n.)
    C2 Proficiency Technical Science

    a part of a plant or animal that looks like a hard hat.

    a structure in certain plants or animals that resembles a protective head covering in shape or function.

    Example

    The flower has a small helmet that protects the seeds inside.

    Example

    The upper sepal of the monkshood flower forms a distinct helmet, which serves to protect the reproductive organs from heavy rain.

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  1. 3 vulgar slang (n.)
    C2 Proficiency British English Slang Vulgar

    a rude word for the end of a penis.

    a vulgar slang term referring to the glans penis.

    Example

    The comedian made a crude joke about a helmet that made the audience uncomfortable.

    Example

    The script was edited for television to remove several instances of 'helmet' used as a vulgar anatomical reference.

Origin

From Middle English helmet, helmett, a borrowing from Old French helmet, heaumet, a diminutive of helme (Modern French heaume), equivalent to helm + -et. The Old French is itself of Germanic origin (whence Old English helm). Used in English since the 15th century, it has largely displaced helm as the general word.

Idioms1 entry

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