hallow UK /ˈhæləʊ/US /ˈhæloʊ/noun 3verb 2forms 4 noun3 •A saint; a holy person; an apostle.All Hallows Eve (or Halloween), the night before All Hallows Day (now more commonly known as "All Saints' Day"). •A shout, cry; a hulloo.Then away they went from merry Sherwood / And into Yorkshire he did hie / And the King did follow, with a hoop and a hallow / But could not come him nigh. — 1777 •[in the plural] (no longer used) The relics or shrines of saints or non-Christian gods.To seek hallows: to visit relics or shrines, in the belief that the saints themselves are present there. verb2 •To make holy, to sanctify.[…]I am coming on, to venge me as I may and to put forth my rightful hand in a well-hallow'd cause. — 1599 •To shout, especially to urge on dogs for hunting. formshallowed · hallowing · halloweth · hallows