Same or similar entry in other lexica. The headword (which must be quoted from somewhere) is third-person singular, present indicative active, of -- seemingly -- the rare verb dua/zw. Note however that Theodoridis on Photius, Lexicon delta783, obelizes it; perhaps, rather, drua/zei.
For other senses of this verb see LSJ s.v. (web address 1).