DSL - DOST Hallow evin, even, n. Also: -hevin, -ewen, hallaw-ewin. [Shortened from [ALHALLOW EVIN].] Hallowe'en.
To Ihonne Waddell, trompetour, ... for his iaubours on Hallowhevin; 1564-5 Edinb. Old Acc. I. 481. For the cwring of ... the Schereff of Hadingtounis wyffe, quha wes wichit be the wich of Mirrielawis ... , one Hallaw-ewin; 1591 Crim. Trials I. 233. [The council] ordanis Hallow evin to be riden and the nichtboures wairnit to that effect; 1621 Edinb. B. Rec. VI. 227. The Sessioun ordained all that danced one Hallow even to stand in ward 24 hours; 1642 Elgin Rec. II. 243. To intimat ... , wpon the Saboths immediatly before Midsommer and Hallow-ewen, that no fyres to be set on wpon these nights; 1649 Cupar Presb. 136. I observed more freets and devilish customs they practice on Hallow even; 1684 Erskine Diary 90.