I. ˈōrə noun
( plural oras -rəz ; also orae ˈōrˌē, ˈōrˌī)
Etymology: Old English ōra, of Scandinavian origin; akin to Old Norse aur-, eyrir ounce (usually of silver), money (in plural) — more at eyrir
: a money of account introduced into England by the Danish invaders and valued in A.D. 920 at 2 1/2 shillings and in the Domesday Book of 1086 at 20 d sterling
II.
plural of os
III. abbreviation
oratorio