skin and bone
Extremely thin or emaciated. I know the merger has been stressful, but have you been eating? Because you're just skin and bone these days.
skin and bone
or skin and bones
COMMON If you describe someone as skin and bone or skin and bones, you mean that they are very thin, usually because they are ill. A man like me can't live on beans — I'll soon be skin and bone. By the end of her life she was nothing but skin and bones.