a person of unyielding character or integrity who does not succumb to pressure

A weary old body (colloquial term, used jocularly or irreverently).

a beanbag chair or large soft cushion used for sitting

a weak, cowardly person or a spineless individual lacking strength of character

to be all skin and bones

to find fault intentionally or look for flaws where there are none

a contemptible individual or miserable person, often implying a lack of self-respect or dignity

the bony framework of a human or animal body

joint (of the skeleton)

extremely cruel and predatory; ruthless and greedy