There are 2 definitions of flex in English:

flex1

Syllabification: flex
Pronunciation: /fleks
 
/

verb

[with object]
  • 1Bend (a limb or joint): she saw him flex his ankle and wince
    More example sentences
    • All these bones articulate with other bones and are able to make tiny interdependent movements, as well as bend or flex themselves.
    • Over the last few days I've been thinking about all the things I won't be able to do with the limb; flex my ankle, wiggle my toes, point my foot left and right.
    • As you flex your ankles, knees and hips, the angle of your front shin with the ground should match the angle of your spine with the ground.
    Synonyms
  • 1.1 [no object] (Of a limb or joint) become bent: prevent the damaged wrist from flexing
    More example sentences
    • Simultaneously, he thrusts his shooting arm to full extension, his hand and fingers flexing downward at the wrist in order to impart a gentle backspin as the ball is released.
    • Her fingers flexed like the arms and legs of a ballet dancer, fingernails glossy pink, although never polished or buffed.
    • Stepping out of his dark blue 1976 convertible, David walked slowly up the driveway, steadily ignoring the way his left hand flexed in and out of a fist.
  • 1.2Cause (a muscle) to stand out by contracting or tensing it: bodybuilders flexing their muscles
    More example sentences
    • They stood before them, flexing their godly muscles.
    • But it is eerily impressive, like watching a brilliant young bodybuilder flexing his steroidal muscles.
    • Loveable cartoon character Popeye always flexes his biceps when he wants to show off his muscles.
    Synonyms
    tighten, tauten, tense (up), tension, contract
  • 1.3 [no object] (Of a muscle) contract or be tensed: a muscle flexed in his jaw
    More example sentences
    • End the movement with the dumbbell over your upper chest and with your pec muscles flexed as hard as possible.
    • He was still standing there when she went back into her room, his arms crossed, the thick muscles of his biceps flexing.
    • Jim's jaw muscle flexed and he continued to unwrap the shirt bits from Blair's arm.
  • 1.4 [no object] (Of a material) be capable of warping or bending and then reverting to shape: set windows in rubber so they flex during an earthquake
    More example sentences
    • Over time, as the boot leather flexes, stiffness decreases.
    • An experienced player can tell by the stick's vibration whether or not the stick flexes too much.
    • A collective puff of expelled breath flexed through the courtyard, liberated pirates rubbing their eyes to be certain the welcome, if not morbid, sight was real.
  • 1.5 (usually as adjective flexed) Archaeology Place (a corpse) with the legs drawn up under the chin: a flexed burial
    More example sentences
    • They did, however, think the skeletons looked very unusual, being very highly flexed, like Peruvian mummies.
    • Despite the length of the pit, the proximity of these articulated extremities and the ilium shows that the primary burial was in a flexed position prior to disturbance.
    • Some adults and children were subject to secondary processing after initial burial in flexed or extended positions in pits located inside the house.

noun

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  • The action or state of flexing: add rigidity and eliminate brake flex
    More example sentences
    • This new Kenda has low, square knobs that eliminate knob flex and give positive, predictable traction on even the hardest surfaces.
    • The idea is to stabilize the scope tube and eliminate tube flex, which is still disaster for a scope.
    • The design adds tremendous strength to your whitewater stroke while retaining perfect flex.

Phrases

flex one's muscles

see muscle.

Origin

early 16th century: from Latin flex- 'bent', from the verb flectere.

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Word of the day skosh
Pronunciation: skəʊʃ
noun
a small amount; a little

There are 2 definitions of flex in English:

flex2

Line breaks: flex

Entry from British & World English dictionary

noun

British
  • A flexible insulated cable used for carrying electric current to an appliance.

Origin

early 20th century: abbreviation of flexible.

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