Search Result for "safety nut":
Wordnet 3.0

NOUN (1)

1. supplementary nut that is screwed down on a primary nut to prevent it from loosening;
[syn: locknut, safety nut]



WordNet (r) 3.0 (2006):

safety nut
    n 1: supplementary nut that is screwed down on a primary nut to
         prevent it from loosening [syn: locknut, safety nut]