endosteum

English Thesaurus

1. vascular membrane that lines the inner surface of long bones (noun.body)

hypernym	:	membrane, tissue layer,
definition	:	a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants (noun.body)

part meronym	:	long bone, os longum,
definition	:	in limbs of vertebrate animals: a long cylindrical bone that contains marrow (noun.body)