Definitions
1.nounA boat that can go underwater.
2.nounA kind of sandwich made in a long loaf of bread.
3.nounPitch delivered with an underhand motion.
4.nounAny submarine plant or animal.
5.nounA stowaway on a seagoing vessel.
6.verbTo operate or serve on a submarine.
7.verbTo torpedo; to destroy with a sudden sneak attack.
8.verb(sometimes figurative) To sink or submerge oneself.
9.adjectiveUndersea.
10.adjectiveHidden or undisclosed."a submarine patent"
11.adjectiveOf a pitch, thrown with the hand lower than the elbow.