(with reference to a limb or joint) bend or become bent

she saw him flex his ankle and wince

it's important to prevent the damaged wrist from flexing

put a (skill, talent, or ability) to use

the talks were seen as a way for Merkel to flex her well-known diplomatic prowess

(of a limb or joint) bent

land softly with slightly flexed knee and hip joints

relating to or denoting the practice of burying a corpse with the legs drawn up under the chin

a flexed burial