flex
flex / fleks/ • v. [tr.] bend (a limb or joint): she saw him flex his ankle and wince. ∎ [intr.] (of a limb or joint) become bent: prevent the damaged wrist from flexing. ∎ cause (a muscle) to stand out by contracting or tensing it: bodybuilders flexing their muscles. ∎ [intr.] (of a muscle) contract or be tensed: a muscle flexed in his jaw. ∎ [intr.] (of a material) be capable of warping or bending and then reverting to shape: set windows in rubber so they flex during an earthquake. ∎ [usu. as adj.] (flexed) Archaeol. place (a corpse) with the legs drawn up under the chin: a flexed burial.• n. the action or state of flexing: add rigidity and eliminate brake flex.PHRASES: flex one's musclessee muscle.
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ball-and-socket joint
ball-and-socket joint
ball-and-socket joint, in engineering, mechanical connection used between parts that… Plants and Animals , coxa Uppermost joint of the leg of an insect, which articulates with the thorax proximally, and with the trochanter distally. The coxa is usually a s… Double-jointed , double-jointed Some individuals are referred to as being ‘double-joined’. In reality these individuals do not have ‘double’ joints, but have a greate… Knee , knee The knees and kneeling have many cultural and social associations. The joints themselves reveal mechanical and physiological features superbly a…
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flex