crouch

nouns

the act of bending low with the limbs close to the body
is a type of (narrower)
the act of bending something

verbs

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"
sit on one's heels
"In some cultures, the women give birth while squatting"; "The children hunkered down to protect themselves from the sandstorm"