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

Derived forms: safety hats

Type of: helmet

• Belleau Wood
• Bellerophon
• belles-lettres
• belletristic
• bellflower
• bellflower family
• bellhop
• bellicose
• bellicoseness
• bellicosity
• bellied
• belligerence
• belligerency
• belligerent
• belligerently
• belling
• Bellingham
• Bellini
• Bellis
• Bellis perennis
• bellman
• Belloc
• bellow
• bellower
• bellowing