A particularly unattractive woman. Sometimes written as a single word. Now, I know I'm no supermodel or anything, but I'm certainly no mud duck either! John had way too much to drink and brought some mudduck back home with him last night.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. an ugly person. She’s a mud duck, but she’s got a sense of humor.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.