1. A hole (as in a helmet) for sound to reach the ears

Derived forms: ear holes

Type of: hole

• prokaryote
• prokaryotic
• Prokayotae
• Prokhorov
• Prokofiev
• prolactin
• prolamine
• prolapse
• prolapsus
• prolate
• prolate cycloid
• prole
• proleg
• prolegomenon
• prolepsis
• proletarian
• proletariat
• proletariate
• proliferate
• proliferation
• proliferous
• prolific
• prolificacy
• prolifically
• proline