n o, m. (O.N. hóss `river-mouth', Bugge, KMMisc. 305 , Bidrag 125 ; but cf. Lat. ōs `mouth') a mouth ; confined to poetry. as a ós (.i. a bhél) is cearr gach creath dumb is every science from his mouth, ZCP iii 378.15 (B. na f.). oscar . . . os gin ┐ cerr balb, O'Dav. 1326. dá hós `for her lips', TD 39.5 . fá chaoir a hóis phóigmhilis, Hackett xxi 41.