padāni—words; tu—but; agata-arthāni—having an unclear meaning; tat—that,; artha-gataye—to understand the meaning; narāḥ—men; yojayanti—join; padaiḥ—with words; anyaiḥ—other; saḥ—that; udghātyakaḥ—udghātyaka; ucyate—is called.