# submarine

Pronunciation: say "sub-muh-REEN" US /sʌb.məˈɹin/, UK /sʌb.məˈɹiːn/

## Noun

1. A boat that can travel beneath the surface of the water.
   - Simple: A kind of boat that can travel under the water.
   - _The submarine dived to escape the warship passing overhead._
   - _The crew spent six weeks aboard the submarine without seeing daylight._
2. A sandwich made in a long loaf of bread, with the filling laid along its length.
   - Simple: A sandwich made with a long loaf of bread cut open and filled.
   - _The deli's Italian submarine comes stacked with salami, ham, and provolone._
   - _She cut the three-foot submarine into slices so everyone at the party got a piece._
5. In baseball, a pitch delivered with an underhand motion.
   - Simple: In baseball, a throw from the pitcher made with a low, underhand swing of the arm.
   - _He finished the inning with a sidearm fastball and a baffling submarine._
   - _Batters see so few submarines that the pitch keeps them guessing all game._

## Adjective

3. Located underwater, relating to what is underwater, or made for use there, especially beneath the sea.
   - Simple: Found under water, having to do with things under water, or made to work there, mostly in the sea.
   - _Engineers designed a submarine pipeline to carry gas across the strait._
   - _Sonar revealed a deep submarine canyon cutting across the continental shelf._
6. Of a baseball pitch, thrown with the hand kept lower than the elbow.
   - Simple: Describes a baseball pitch thrown with the hand below the elbow.
   - _The club signed a submarine pitcher to confuse its rivals' left-handed hitters._
   - _His submarine delivery starts with his knuckles nearly scraping the mound._
8. Hidden from view or not disclosed to others.
   - Simple: Kept secret or hidden from others.
   - _When the submarine patent finally surfaced, every maker of the device suddenly owed royalties._
   - _New filing rules were meant to stop submarine patents from staying secret for decades._

## Verb

4. To attack with a torpedo, or to destroy something with a sudden sneak attack.
   - Simple: To destroy something with a sudden surprise attack, like a torpedo does.
   - _Economists feared that higher interest rates would submarine the recovery._
   - _A leaked memo submarined the senator's campaign a week before the vote._
7. In a crash or sudden stop, to slide forward under one's seat belt instead of being held back by it.
   - Simple: To slip forward under your seat belt when a car crashes or stops suddenly.
   - _Reclined passengers are more likely to submarine in a head-on collision._
   - _In the early tests, the crash dummies submarined beneath the lap belt._
9. To sink or submerge oneself, whether physically or figuratively.
   - Simple: To sink yourself down or go under, sometimes into a strong feeling.
   - _Harbor seals submarine beneath the ice and surface again at breathing holes far from the boat._
   - _For months after the divorce, she submarined into her work and stopped calling friends._
10. To serve as a crew member aboard a submarine or help operate one.
   - Simple: To work on a submarine as part of its crew.
   - _He submarined for twenty years before retiring from the Navy._
   - _Officers who submarine together in such tight quarters often become lifelong friends._

## Other meanings

- (noun) Any plant or animal that lives underwater, especially in the sea.
- (noun) A person who hides aboard a seagoing ship to travel in secret.

## Origin

Formed from sub- + marine.

Source: DictionaryAI, https://dictionaryai.com/define/submarine (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).