橈骨[toukotsu] radius (bone of the forearm)
橈む[tawamu] to bend
橈める[tawameru] to bend (a piece of wood, etc.)

橈脚類[kaiashirui] copepods (small crustaceans of subclass Copepoda)
橈骨動脈[toukotsudoumyaku] radial artery

せん状骨[senjoukotsu] scaphoid bone (in wrist near thumb)
遺骨[ikotsu] remains
化骨[kakotsu] ossification
会厭軟骨[eennankotsu] epiglottis
がい骨[gaikotsu] skeleton

雁骨[kariganebone] scapula
気骨[kikotsu] (moral) backbone
侠骨[kyoukotsu] chivalrous spirit
胸骨[kyoukotsu] breastbone
筋骨[kinkotsu] muscles (sinews) and bones