1. A protective mask with a filter; protects the face and lungs against poisonous gases
   - gasmask, respirator

Derived forms: gas helmets

Type of: mask

• Pelecanus onocrotalus
• pelecypod
• pelecypodous
• pelerine
• Peleus
• Pelew
• pelf
• Pelham
• Pelham Grenville Wodehouse
• pelican
• pelican crossing
• Pelican State
• peliosis
• pelisse
• pell-mell
• Pellaea
• Pellaea andromedifolia
• Pellaea atropurpurea
• Pellaea mucronata
• Pellaea ornithopus
• Pellaea rotundifolia
• pellagra
• pellagrous
• pellet
• pellicle