1. Supplementary nut that is screwed down on a primary nut to prevent it from loosening
   - locknut

Derived forms: safety nuts

Type of: nut

• Selenicereus
• Selenicereus grandiflorus
• selenide
• Selenipedium
• selenite
• selenium
• selenium cell
• seleno-
• selenographer
• selenography
• selenolatry
• selenology
• Seles
• Seleucus
• Seleucus I
• Seleucus I Nicator
• self
• self acceptance
• self-abasement
• self-abnegating
• self-abnegation
• self-absorbed
• self-absorption
• self-abuse
• self-accusation