骨

bone

frame

outline; core

backbone; spirit; fortitude

Adjectival nouns or quasi-adjectives (keiyodoshi)

laborious; troublesome; difficult

Word usually written using kana alone

knack; skill; trick; secret; know-how; the ropes; hang

bone; skeleton

cremated remains (esp. the bones); ashes

bone fracture

Idiomatic expression

to be hard (to do); to be difficult; to require much effort; to be laborious; to be backbreaking; to have trouble (doing)

skeleton; skeletal structure; build; frame; physique

framework

Idiomatic expression

to make efforts; to take pains

to break a bone

curio; antique

boning (fish or meat); deboning

watering down (a plan, bill, etc.); dilution; emasculation

taking the backbone out of; weakening

to the core; to the bone; to the marrow

skeletal frame; skeleton; build; physique

framework; frame; structure

outline

antique; curio

Anatomy

bone marrow; medulla

heart's core; depths of one's heart

Obsolete term

main point; vital part

skin and bones

flesh and bones

to exert oneself greatly; to take pains

Nouns which may take the genitive case particle 'no'

on the bone (meat, etc.); unboned

Common noun

skeletal system; skeleton

to be bony; to be angular

Noun or verb acting prenominally

having spirit; (being) staunch; having backbone

Anatomy

pelvis

one's own flesh and blood; blood relative; kinsman

flesh and bone; (one's) body

pains; efforts; trouble; labor; labour; services

big-boned; sturdily built; stout

solid (plan, storyline, etc.)

Idiomatic expression

to die; to become bones

relaxation; recreation; recess