Any of various chiefly Old World birds of the family Motacillidae, having a slender body with a long tail that constantly wags.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "wagtail" in a sentence
"Is it known that the pretty pied water-wagtail is called la lavandière from its love of water and its manner of beating up and down its tail as our washerwomen wield their wooden beaters?"
"What was generally made use of consisted of vervain, tenia, and hippomanes; or a small portion of the secundine of a mare that had just foaled, together with a little bird called wagtail; in Latin motacilla."
"It would seem quite natural to call the wagtail "lady-bird," if that name had not been registered by a diminutive podgy tortoise-shaped black and red beetle."