under

1. under (prep) — sense 1

Definition: Beneath; below; at or to the bottom of, or the area covered or surmounted by.

Example: We found some shade under a tree.

2. under (prep) — sense 2

Definition: Beneath; below; at or to the bottom of, or the area covered or surmounted by.: Below the surface of.

Example: Who lives in a pineapple under the sea? SpongeBob SquarePants!

3. under (prep) — sense 3

Definition: From one side of to the other, passing beneath.

Example: I crawled under the fence.

4. under (adv) — sense 4

Definition: In or to a lower or subordinate position, or a position beneath or below something, physically or figuratively.

Example: pulled under by the currents

5. under (adv) — sense 5

Definition: So as to pass beneath something.

Example: There's quite a gap, so you may be able to sneak under.

6. under (adv) — sense 6

Definition: Less than what is necessary to be adequate or suitable; insufficient.

Example: The plants were underwatered.

7. under (adj) — sense 7

Definition: Lower; beneath something.

Example: This treatment protects the under portion of the car from rust.

8. under (adj) — sense 8

Definition: In a state of subordination, submission or defeat.

Example: The army could not keep the people under.

9. under (adj) — sense 9

Definition: Under anesthesia, especially general anesthesia; sedated.

Example: Ensure the patient is sufficiently under.

10. under (noun) — sense 10

Definition: The amount by which an actual total is less than the expected or required amount.

Example: […] standard cash count forms used to record the count and any overs or unders.

11. under (noun) — sense 11

Definition: Something having a particular property that is low or too low.

Example: I went fishing but caught nothing but unders.

12. under (noun) — sense 12

Definition: A bet that a particular sporting statistic, such as points scored in a game, will be below a certain stated value.