flex

verb (used with object)

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.

verb (used without object)

3. to bend.

noun

4. the act of flexing.
5. British.
   1. any flexible, insulated electric cord; an electric cord or extension cord.
   2. Slang.an elastic band, as a garter.
6. Mathematics. an inflection point.

adjective

1. Informal. flexible: a flex program of workers’ benefits.

1. a combining form representing flexible in compound words: flextime.

noun

1. British a flexible insulated electric cable, used esp to connect appliances to mainsUS and Canadian name: cord
2. informal flexibility or pliability

verb

3. to bend or be benthe flexed his arm; his arm flexed
4. to contract (a muscle) or (of a muscle) to contract
5. (intr) to work according to flexitime
6. to test or display (one’s authority or strength)

v.

1520s, probably a back-formation from flexible. Related: Flexed; flexing.

v.

1. To bend.
2. To contract a muscle.
3. To move a joint so that the parts it connects approach each other.