trocar /trōˈkär/

1. A surgical perforator with a three-sided cutting point used for inserting a cannula, to drain off or introduce liquid, etc
2. Sometimes, a cannula

• ptero-
• pterodactyl
• pterodactyle
• pterodactyles
• pterodactyls
• pteroic acid
• pteropod
• Pteropoda
• pteropod ooze
• pteropods
• pterosaur
• Pterosauria
• pterosaurian
• pterosaurians
• pterosaurs
• -pterous
• pteroylglutamic acid
• pterygia
• pterygial
• pterygials
• pterygium
• pterygoid
• pterygoid bone
• pterygoids
• Pterygotus