fritillary (n.) Look up fritillary at Dictionary.com
type of butterfly, 1857, earlier a type of plant (Fritillaria Meleagris, 1633), from Latin fritillus "dice-box," from fritinnire "to twitter," imitative of the rattle of dice. The butterfly so called perhaps from resemblance of its markings to those of dice; or the names may have been given in confusion, perhaps on the notion that fritillus meant "chessboard."