n n sea, wave . Orig. disyll., see Pedersen Vgl. Gr. i 311 . The ns. is found only in glossaries, and many exx. given here could belong to 1 trethan, q.v.: trīath muir .i. trethan a réim ... tīr-ūath a taithmech, Corm. Y 1202 . `t.¤' tond co n-ilur ndath, Metr. Gl. 9 § 2 . triath .i. tonn, O'Cl. tar tuind trethan (: lethan), Fél. June 3 ( O'Dav. 1576 ). domruacht tond fri trethan tracht against the shore of the sea (?), LU 3014 . tar cach trethain (: lethain), 2965 . can tic tuili trethan ?, SR 7901 . iasc bis hi trethain, 8196 . ailli ... a noebtrethna, 494 . aichre ri tráchta trethna `furious are the seas against the shore,' Metr. Dinds. iii 104.8 . dechmad trethan `tithes of sea,' BColm. 52.26 .

Compds. ¤glan bright-waved: anair dar muir tríath-glan tend, Metr. Dinds. ii 30.51 . ? téitgel triathglan dō ba hēcen biathad Echach, Arch. Hib. ii 70 § 5 . ¤mag sea-plain: línsat triáthmag a teite `they filled the sea-plain with their gathering,' Metr. Dinds. iii 256.9 . ¤trethnach sea-tempest: follnathar tríathtrethnaig 'he who rules the sea-tempest' Sages, Saints and Storytellers 26 § 16 . See also under 1 trethan.