| 1. | to bend, as a part of the body: He flexed his arms to show off his muscles. |
| 2. | to tighten (a muscle) by contraction. |
| 3. | to bend. |
| 4. | the act of flexing. |
| 5. | British.
|
| 6. | Mathematics. an inflection point. |

flex (flěks)
v. flexed, flex·ing, flex·es
To bend.
To contract a muscle.
To move a joint so that the parts it connects approach each other.