Utas
Utas , noun
[Old French huitieves, witieves, witaves, oitieves, plural of huitieve, witieve, etc., eighth, Latin octavus. See Octave, n.]
1.
(O. Eng. Law) The eighth day after any term or feast; the octave; as, the utas of St. Michael. — Cowell
The marriage was celebrated and Canterbury, and in the utas of St. Hilary next ensuing she was crowned.
2.
Hence, festivity; merriment. [Obsolete] — Shakespeare