any of various passerine songbirds of the genera Motacilla and Dendronanthus, of Eurasia and Africa, having a very long tail that wags when the bird walks: family Motacillidae
WordReference Random House Unabridged Dictionary of American English © 2025
wag•tail
(wag′tāl′),USA pronunciation n.
- Birdsany of numerous small, chiefly Old World birds of the family Motacillidae, having a slender body with a long, narrow tail that is habitually wagged up and down.
- Birdsany of several similar birds, as the water thrushes of the genus Seiurus.
- wag + tail1 1500–10
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