crouch -
bend one's back forward from the waist on down; "he crouched down"; "She bowed before the Queen"; "The young man stooped to pick up the girl's purse"
flex,
bend cause (a plastic object) to assume a crooked or angular form; "bend the rod"; "twist the dough into a braid"; "the strong man could turn an iron bar"
cower,
huddle crowd or draw together; "let's huddle together--it's cold!"
crouch -
sit on one's heels; "In some cultures, the women give birth while squatting"; "The children hunkered down to protect themselves from the sandstorm"
