Another Old Irish name for the festival was or , probably meaning 'first of summer'. Ó Duinnín's Irish dictionary (1904) gives this as or in modern Irish. It survives in the Scottish Gaelic name for the month of May, , and matches the Welsh . These have all been derived from proto-Celtic (first + summer).
anOtheR olD iriSH naMe fOR the Festival Was Or , pRObAbly mEANinG 'firST of sUmmer'. ó duinnÍn's irisH diCtionaRY (1904) giveS This as or iN mOdeRN irISH. it SUrviveS in tHe scOTTiSh gaELiC namE For the month of may, , And MAtcHeS ThE weLsh . thESE have alL beeN deriVed From Proto-ceLTic (firSt + sUmmeR).