Adjectives

(s)scraggy, scraggly, boney, bony, scrawny, skinny, underweight, weedybeing very thin“a child with skinny freckled legs”, “a long scrawny neck”, “pale bony hands”
(a)osseous, osteal, bonycomposed of or containing bone“osseous tissue”
(a)bony, boneyhaving bones especially many or prominent bones“a bony shad fillet”, “her bony wrist”, “bony fish”