Definition of "muzzy"

The Handel excerpts are afflicted with a combination of high surface noise from the source material as well as variably muzzy sound.

1979, Journal - Association for Recorded Sound Collections

Why laſt night, as Colonel Kill'em, Sir William Weezy, Lord Frederick Foretop, and I were careleſsly ſliding the Ranelagh round, picking our teeth, after a damn'd muzzy dinner at Boodle's, who ſhould trip by but an abbeſs, well known about town, with a ſmart little nun in her ſuite.

1770, Samuel Foote, The Lame Lover, a Comedy in Three Acts. […], London: […] Paul Vaillant; and sold by P[eter] Elmsly […]; and Robinson and Roberts, […], Act I, page 12

To the muzzy drumming of beer in his veins he gazed long and owlishly at the sombre cottage[.]

1930, Norman Lindsay, Redheap, Sydney, N.S.W.: Ure Smith, published 1965, page 112

The front bar was plying trade too, by customers that kept oozing in through the back door. The fat publican served whoever came, muzzy with the succession of pots that stodged away his day.

1938, Norman Lindsay, Age of Consent, 1st Australian edition, Sydney, N.S.W.: Ure Smith, published 1962, page 159

"Ethiopia is a fortress of Christianity surrounded by Muzzies," said Tesfaye. His description paraphrased the words of Emperor Menelik II

1999, Julia Stewart, Eccentric Graces: Eritrea & Ethiopia Through the Eyes of a Traveler, page 138