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A bicycle helmet

Alternative forms[edit]


From healmet, helmet, an Old French diminutive of helme (Modern French heaume). The Old French is itself from the Germanic helm. English since the 15th century, has gradually displaced Old English helm as the generic word.



helmet (plural helmets)

  1. A protective head covering.
    • 1963, Margery Allingham, chapter 2, in The China Governess[1]:
      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.
  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. (heraldry) The feature above a shield on a coat of arms.


Derived terms[edit]

Related terms[edit]



helmet (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.




  1. plural of helmi
  2. necklace made of pearls or beads


Inflection of helmet (Kotus type 7/ovi, no gradation)
nominative helmet
genitive helmien
partitive helmiä
illative helmiin
singular plural
nominative helmet
accusative nom. helmet
genitive helmien
partitive helmiä
inessive helmissä
elative helmistä
illative helmiin
adessive helmillä
ablative helmiltä
allative helmille
essive helminä
translative helmiksi
instructive helmin
abessive helmittä
comitative helmineen