submarine

/sʌb.məˈɹiːn/

noun

Meaning

A boat that can go underwater.
A kind of sandwich made in a long loaf of bread.
Pitch delivered with an underhand motion.
Any submarine plant or animal.
A stowaway on a seagoing vessel.

Synonyms

U-boat,

sub,

grinder,

hero,

hoagie,

hoagy,

po' boy,

poor boy,

sub,

submarine sandwich,

torpedo,

wedge

verb

Meaning

To operate or serve on a submarine.
To torpedo; to destroy with a sudden sneak attack.
(sometimes figurative) To sink or submerge oneself.

adjective

Meaning

Undersea.
Hidden or undisclosed.
"a submarine patent"
Of a pitch, thrown with the hand lower than the elbow.