1. A sea in which the waves are running directly against the course of the ship

Derived forms: head seas

Type of: sea

• ninja
• ninjitsu
• ninjutsu
• Ninkharsag
• Ninkhursag
• ninny
• ninnyhammer
• ninon
• ninth
• ninth cranial nerve
• Ninth of Ab
• Ninth of Av
• Nintoo
• Nintu
• Ninurta
• Niobe
• niobite
• niobium
• Niobrara
• Niobrara River
• nip
• nip and tuck
• nip off
• nipa
• Nipa fruticans