Moesler (m)
(with) definite article: deany person who plays some kind of bagpipe (&c.)
Variant spelling; According to Boone "encountered in 16th century dictionaries".
Boone, Hubert: De doedelzak. Woord vooraf door J. Van Haver en A. Doppagne… Inleiding door R. De Maeyer… Brussel, 1983, p.18.