Etymology

bicorn

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Today it means: A two-cornered hat, worn by European and American military and naval officers from the 1790s. Full definition →

Latin bicornis
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The story

  1. Latin · borrowed frombicornis“two-horned; two-pronged”
  2. English todaybicorn

Borrowed from Latin bicornis (“two-horned; two-pronged”). Compare French bicorne (“two-cornered hat; two-horned monster”) and Middle English bicorne (“two-horned anvil; two-pronged fork; fabulous (two-horned) beast”). By surface analysis, bi- + -corn. Doublet of bicorne.

Etymology from Wiktionary, CC BY-SA 4.0.