noun
distal phalanx
Anatomical term for the bone at the tip of a finger or toe.
末節骨は指の先端にある小さな骨です。
The distal phalanx is the small bone at the tip of the finger.
Compound of 末 (matsu, 'tip, end'), 節 (setsu, 'joint, segment'), and 骨 (kotsu, 'bone'). The reading まっせつこつ results from gemination of the initial /tsu/ in 節.