ind is aire isber Morand isin Brīatharogum: ærchaid fid edath .i. ind aor rolil in flesc cui nomen est fē, Corm. Y 606 . rinntaid .i. nomen do fir aoraid (aorchaid, MS., ærad, v.l.) rindass cach n-aghaid, 1081 . ærc[n]aid fer no fid .i. idhadh (leg. edad), Anecd. iii 43.25 . Cf. ergnaid fid .i. edad, Auraic. 5589 .

n the name of the fourth vowel of the ogam alphabet, e . Also said to mean the aspen (cf. ébad) : edhadh .i. ed uath .i. crand fir no crithach, Auraic. 1195 = edath , 4298 . ergnaid fid .i. edad...ar is don crunn crithaig is ainm ergnaid fid, 5589 , cf. e, ærc[n]aid fer nó fid .i. idhadh, Anecd. iii 43.25 . ærchaid fid edath yew (?) Corm. Y 606 . edad .i. eu, Auraic. 5522 . ba die edath no bith in flesc, Corm. Y 606 .

Apparently confused with idad, the name of the fifth vowel, in: ibine...arroichled iarom edhad as, co nderna ibne de, Corm. Y 1301 . But perhaps ibēne is meant here.

n the name of the vowel i, the fifth vowel of the ogam alphabet: idho la hailm edho (i.e. i, a and e), O'Curry 370 (< H 3.18, p. 207 ). fer didiu ... io no iphin ina reimim ... is idad inna selbad ┐ ina thoghairm "i' is in its possessive and vocative,' Auraic. 1676. mil immorro ┐ fir ┐ lir is idho is coir intibh, BB 301b17 .

Also the name of some tree, yew tree? (but ibar is placed among the `airigh feada' ( Laws iv 146.21 ) while idadh is merely one of the `athaigh feada' ( ib. 25 )): idedh .i. iobhar, Auraic. 4299. edad .i. eu, ida .i. ibhar, BB 309a46 . tucad uad-side forsin fid ut i n-ogam dianad ainm idad, ar is uad tucad int ainm is idad fair; ar is do ibar is ainm idad, Auraic. 5595. Confused with edad, q.v. e, aerc[n]aid fer nó fid .i. idhadh, Anecd. iii 43.25 . flesc idaith ... ba hūath fri cāch a gabāil inda lāim ... ba die edath nobīth in flesc ... aerchaid fid edath , Corm. Y 606.