1. The external margin of the aperture of a shell 
2. An organ in insects and crustaceans covering the upper part of the mouth, and serving as an upper lip 
3. A lip or edge, as of a basin

Derived forms: labra

Encyclopedia: Labrum

• piscivorous
• pish
• pisha paysha
• pisiform
• pisiform bone
• pismire
• pisolite
• Pisonia
• Pisonia aculeata
• piss
• piss artist
• piss down
• piss off
• piss-take
• piss-up
• pissaba palm
• pissant
• pissed
• pissed off
• pisser
• pisshead
• pissing
• Pissis
• pissoir
• pisspot