late 15c., mappe "bundle of yarn, etc., fastened to the end of a stick for cleaning or spreading pitch on a ship's decks," from Walloon (Fr.) mappe "napkin," from L. mappa "napkin" (see map). The verb is first recorded 1709. Related: Mopped; mopping.
The last item or act; the final result: And the mop was he got caught
A head of hair; hairdo
[1944+ Black; probably from the notion of mopping or cleaning up, influenced by earlier jazz use ''the last beat at the end of a jazz number'']
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
mops in Technology
Like Yerk, Mops is descended from the ex-commercial object-oriented language Neon. It was developed by Michael Hore . Mops features an optimising native-code compiler; it is much faster than Yerk, but less compatible with Neon. Mops includes extensions such as multiple inheritance. Version 2.3.1 includes a compiler, documentation and an editor. A Macintosh version is available. (ftp://oddjob.uchicago.edu/pub/Yerk).