資料來源 : pyDict

尾下骨

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Hypural \Hy*pu"ral\, a. [Pref. hypo- + Gr. ? tail.] (Anat.)
   Under the tail; -- applied to the bones which support the
   caudal fin rays in most fishes.