From all + plural of hallow (“saint”). Forms in -n (All-Hallown etc.) show reflex of the original genitive plural (Old English halgena).
- (archaic) The saints, taken collectively. [from 10th c.]
1666, William Dugdale, Origines Juridiciales:
- There should be four Reveals that year, and no more; one at the feast of All hallown, another at the feast of St. Erkenwald.
1847, George Lipscomb, The History and Antiquities of the County of Buckingham:
- In this parish were, anciently, two Chantries; one situated in Edlesborough, and dedicated to St. Mary; 1 and the other in the Hamlet of Dagnall, dedicated to All Hallows [...].
1897, William Morris, The Water of the Wondrous Isles:
- I swear by All-hallows that I will not let any have it to hire, nor will I sell it, since thou hast made it holy by dwelling therein.
- (chiefly archaic) All Saints' Day, the 1st of November; the Christian feast day honoring all Christian saints. [from 10th c.]