n o, n. Later m., but d s. often tosaig. IGT Decl. § 55.

(a) beginning: ised inso t.¤ indala sailm, Ml. 27d2 . is dia as t.¤ , 85b15 . benedic a t.¤ benedic a diad, 120c5 . cid amal bid du thoschib, 129c12 . in creti dúnni at (sic leg.) tosge huilc dún ... amal rocretset ar n-aithir romdar tosge maith doib, Ml. 96b5 . is ed inso t.¤ preceptae iohain, Thes. i 486.30 . o thosuch bliadne, ii 18.38 . tucad a tosuch fo diu[d], Sg. 202b8 . hí tosug inna rainne, 213a10 . etir dered is tossach, SR 4832 . gan deiredh is gan tosach , ZCP viii 114 § 2 . na doíni atbathatar ó thossuch domuin, TBFr. 307 . is e tossach mortha anma M. ... in chuimleng ... dorigne, PH 6284 . t.¤ suirghi, IT i 125.7 . corob é ba rīg Con[n]acht ... ic tobairt thosaich na tāna for Ultaib, Ériu ii 184.1 . t.¤ rabhuidh rug a dealbh `his aspect became threatening,' iv 112.15 . Hence incipit, first line of poem: etir tosaichib na rann ┐ deridib na rann eile, Fél. 14.x . ba hiad so tossaighe na salm, BCC 214.16 . 'ag so bráighi dhuit, a Dhé' an t.¤ , IGT Decl. 5.28 .

(b) principle: is hegin tosaighi ┐ cuisi is airdi na mar adubramar do beth ag na gnimarthaib so, Mackinnon Cat. 39.2 . tri tosaidh na naduire .i. materia ┐ forma ┐ privacio , Nat. Lib. of Scotland MS. II p. 41 . o t.¤ inmhedhonach eigin bis comchoitchinn don gne uile, Nat. Lib. of Scotland MS. XII, iii Ib2 .

(c) precedence, first place: connar-leced t.¤ na toisigeacht dá stocaib croda, TTebe 2800 . no cu ruc A. t.¤ de `until A. had taken away the lead,' 2360 . t.¤ failte is fothraccaidh, BNnÉ 255.20 . t.¤ fothraiccthi re bfleidh | t.¤ cuirn, t.¤ cuiridh, ZCP viii 219 § 8 . ná geibh t.¤ leptha de | ret t'aes cumtha is comairle, SG 107.11 . congbhaid annos anallan | t.¤ éigse is ealadhan, Content. xxviii 3 . t.¤ uaim-se fhuair seisean, DDána 69.23 . toiseach i ttír bhiodhbhadh, Éigse iii 132.85 .

(d) van, battlefront: bēs adchotar nech aile | do, t.¤ na conaire, TBC-I¹ 235 . do ronsat na Cristaighi ceithre tosaig dibh fein cum in chatha `acies,' ITS xix 42.14 . dochuaid German féin hí t.¤ in chatha la Bretnu, Anecd. iii 68.16 . Muiredach robái i tossuch sluaig na nócc, Trip. 150.25 . for t.¤ a shlogaid, CCath. 6051 . ar t.¤ gacha coirigthi, RC xix 290 § 228 . ro choirigh t.¤ ┐ deredh ar a deglaochaib, Celt. Rev. ii 204 . do cured a ndered asa n-inad ┐ do mebaid da t.¤ , Ann. Conn. 1270.7 . robriseador fo thrí an glasslaith for th.¤ an tsluaig araill, AFM iii 356.8 .

(e) front part; Of a ship: ag accallaimh na sgūt ┐ na sgiam-t[h]osach, ML² 661 . téid i dt.¤ na luinge, TSh. 2639 . Of a horse: tuarccaib N. tossach aneich ... dorala foa etorra, AFM vi 2216.3 .

(f) g s. as adj. front, foremost: docunnaibh Sisian an leoman ... ar cois tosaigh `the front paw,' ZCP vi 293.25 . do thochuil in leoghan ... derc ... lena chosaibh trennertmura tosaigh, Études Celt. i 91.15 . ar gach taobh do chuirr thossaigh na luinge, AFM vi 1822.7 .

(g) With various prepp.

(i) ar t.¤ , ar tosaig first, at first: mad ar thosuch beid, Sg. 203a7 . is in faichte bes coir ar t.¤ , Laws ii 16.18 Comm. caidi a damna, trá, ar tosaig?, Ériu iv 220.28 . is é caislén an ghradha in fuath ar tosaigh, Stair Erc. 2244 . co tainic loisi de ar tosaigh, 2487 . gnáth ar tt.¤ ag teacht di | fuaradh carad fa chéili, Studies 1921 588 § 2 . mairg, a Dhé, thug ar tosaigh, Aithd. D. 12.12 . grádh don chóir thug ar dtosaigh (:air). DDána 7.29 . druim ar t.¤ tug re a chineadh, 15.9 . im Brí Léith ar fir-thossach, LL 163a35 .

(ii) i tosuch at first: is hed inso no chairigur i tossuch, Wb. 11d1 . isme féin asbiur i tossuch, 14c30 . hi tossuch, 5a11 . ceist cindus rombatur int psailm hi tosugh, Hib. Min. 7.208 . dús cia díb lasa ragtha i t.¤ , BDD² 426 . romlēicidsa com longes hi tossach, TBC-I¹ 1010 . teitsidi co lLáeg hi tossiuch, 1382 . srainis in milchu for in leomun ... i t.¤ , RC xxiv 174.9 . feraid tra imairig a tosuch comdar scitha ┐ dogniad cora fa dheoigh, vi 174.10 .

(iii) ó thosaig in the beginning: loise an tsaoghail mhóir-se a-muigh | is eadh tháirreas ó thosuigh, DDána 37.20 . ní huaibhse rug an nglaic ngloin | is ní dait tug ó thosoigh, Studies 1918, 282 § 15 .

? comēt mo broinn mbuilid | nār līntar cen mesair | co rop dēniu a tosaig | a bith isin tesaig, ZCP vi 259 § 7.