The Collaborative International Dictionary
Powdike
Powdike \Pow"dike\, n. [Scot. pow, pou, a pool, a watery or
marshy place, fr. E. pool.]
A dike a marsh or fen. [Prov. Eng.]
--Halliwell.
Wiktionary
powdike
n. (context UK dialect English) A dike; a marsh or fen.