1. A lightweight protective helmet (plastic or metal) worn by construction workers
   - hard hat, tin hat

Derived forms: safety hats

Type of: helmet

• trampoline
• trampolinist
• tramway
• trance
• trancelike
• tranche
• Trandate
• trandolapril
• trannie
• tranny
• tranquil
• tranquility
• tranquilize
• tranquilizer
• tranquilizing
• tranquillise
• tranquilliser
• tranquillising
• tranquillity
• tranquillize
• tranquillizer
• tranquillizing
• tranquilly
• trans fat
• trans fatty acid