The story
- Middle English · derived fromwagstert
- English todaywagtail
From a partial suppletion of Middle English wagstert (literally “wag-tail”), equivalent to wag + tail.
Etymology from Wiktionary, CC BY-SA 4.0.
wagtail
Today it means: Any of various small passerine birds, principally of genus Motacilla, of the Old World, notable for their long tails. Full definition →
Middle English wagstert