Any elevated object on land which serves as a guide to mariners, such as a hill or steeple. / A beacon, buoy, etc. placed in the sea to aid navigation.

plural of seamhead

(slang) A devoted baseball fan.

plural of ordinary seaman

plural of able-bodied seaman

(mineralogy) An orthorhombic-dipyramidal mineral containing boron, hydrogen, manganese, oxygen, and phosphorus.

mail transported by ship over the sea

Seamless; without seams.

(rare, nonstandard) A female sea horse.

plural of seamew