any of numerous moths of the family Arctiidae, many of which have conspicuously striped or spotted wings.
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British Dictionary definitions for tiger moth
any of a group of arctiid moths, mostly boldly marked, often in black, orange, and yellow, of the genera Arctia, Parasemia, Euplagia, etc, producing woolly bear larvae and typified by the garden tiger (Arctia caja): Often shortened to: tiger
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012