Definition of "helmet"

helmet

/ˈhɛlmɪt/

noun
plural helmets
1. A hard, protective head covering, typically part of armour.
  Quotations
  Now that she had rested and had fed from the luncheon tray Mrs. Broome had just removed, she had reverted to her normal gaiety. She looked cool in a grey tailored cotton dress with a terracotta scarf and shoes and her hair a black silk helmet.
  1963, Margery Allingham, chapter II, in The China Governess: A Mystery, London: Chatto & Windus
  1. (heraldry) Such a helm when placed above a shield on a coat of arms.
2. That which resembles a helmet in form, position, etc.
  1. The upper part of a chemist's retort.
  2. The hood-shaped upper sepal or petal of some flowers, as of the monkshood or the snapdragon.
  3. A naked shield or protuberance on the top or fore part of the head of a bird.
  4. The glans penis.
    (by extension, derogatory) A contemptible or stupid person.
    Quotations
    Jarvo’s a stinky old helmet.
    2021 September 3, MJowen174, Twitter‎, archived from the original on 2023-01-14
verb
third-person singular simple present helmets, present participle helmeting, simple past and past participle helmeted
1. (transitive) To cover with, or as if with, a helmet.