English Explanatory Dictionary

castellated nut

English dictionary entry

Meanings

noun
  1. A type of nut (internally threaded fastener) with castellations, typically to hold a retaining pin that is passed through a cross-drilled hole, such as a cotter pin.

Word forms

castellated nut castellated nuts

Etymology

Physically descriptive via a metaphor; called thus because the slots in the nut — the castellations — have a fancied resemblance to the battlements of a castle.

Related words

crenellation
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