In early use with punning allusion to tory-rory; later chieflyScottish, or as a child's word..
2Scottish. Of clothing, etc.: bright, showy, ‘loud’.
Origin
Late 17th century; earliest use found in Edmund Hickeringill (d. 1708), Church of England clergyman and religious controversialist. From roar + -y. Compare slightly later rory-tory.