gash 
(găsh)
(găsh)tr.v. gashed, gash·ing, gash·es
To make a long deep cut in; slash deeply.
n.
1. A long deep cut.
2. A deep flesh wound.
[Alteration of Middle English garsen, to scarify, from Old North French garser, from Late Latin charaxāre, to scratch, engrave, from Greek kharassein.]