Webster’s Revised Unabridged Dictionary · 1913 Postcava Post′ca′va (·kā′vȧ), n.; pl. Postcavæ . [NL. See Post-, and Cave, n.] (Anat.) The inferior vena cava. — Post′ca′val (#), a. B. G. Wilder. ‹ Postboy Postclavicle ›