The Oxford Thesaurus An A-Z Dictionary of Synonyms - gashn.

1) cut, slash, wound, score, cleft, incision, laceration, slit, groove, split: The chisel slipped, cutting a deep gash in the table. --v. 2) cut, slash, wound, score, cleave, incise, lacerate, slit, groove, split: I've gashed my hand on a rusty nail.