safety nut

1. 1.

   supplementary nut that is screwed down on a primary nut to prevent it from loosening

   Synonymslocknut

   Broadernut

Questions about safety nut

What does safety nut mean?

safety nut means "supplementary nut that is screwed down on a primary nut to prevent it from loosening".

What is another word for safety nut?

Close synonyms include locknut. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is safety nut a common word?

safety nut is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.