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

Derived forms: head seas

Type of: sea

• sae
• Saek
• Safaqis
• Safar
• safari
• safari park
• xylene
• xylo-
• Xylocaine
• Xylocopa
• xylography
• xylol
• Xylomelum
• Xylomelum pyriforme
• xylophone
• xylophonist
• Xylopia
• Xylopia aethiopica
• xylose
• xylosma
• Xylosma congestum
• Xyphophorus
• Xyphophorus helleri
• Xyridaceae
• Xyridales