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Webster 1828 Edition

ppr.

Cutting long, deep incision.

gashing

gashing ‎(plural gashings)

The act of making a gash, or cut.
- 1821, Theodore Dehon, Sermons, on the Public Means of Grace
  Nature prompts to the use of them; for the savage of the woods has the song and the ceremonies of his ancestors, and by the gashings and daubings with which he disfigures his form, denotes his tribe.
(engineering) The roughing operation for worm gears.