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The Collaborative International Dictionary
Riotour

Riotour \Ri"ot*our\ (-[=oo]r), n. A rioter. [Obs.]
--Chaucer.

Wiktionary
riotour

n. (obsolete form of rioter English)

Usage examples of "riotour".

And whan this riotour, with sory grace, Hadde filed with wyn his grete botels thre, To hise felawes agayn repaireth he.