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

Derived forms: safety hats

Type of: helmet

• Kilimanjaro
• Kiliwa
• Kiliwi
• kill
• kill off
• kill oneself
• kill two birds with one stone
• kill zone
• killable
• Killarney fern
• killdeer
• killdeer plover
• killer
• killer bee
• killer cell
• killer T cell
• killer whale
• killick
• killifish
• killing
• killing field
• killing zone
• killingly
• killjoy
• killock