skeletal
skel-e-tal
adjective
Relating to or forming the basic framework of a body or structure.
"Scientists studied the skeletal remains carefully."
adjective
Extremely thin, often unhealthily so, resembling a skeleton.
"The rescued dog was skeletal and weak."
Thesaurus
Synonyms: lean, emaciated, wasted, cadaverous, gaunt, pinched, thin, haggard