noun

a long, deep cut or wound.

a bad gash in one leg became infected

laceration,cut,slash,tear,gouge,puncture,score,incision,slit,split,rip,rent,nick,cleft,scratch,scrape,graze,abrasion,wound,injury,lesion,contusion,trauma,traumatism

verb

make a long, deep cut in.

the jagged edges gashed their fingers

lacerate,cut (open),slash,tear (apart),gouge,puncture,incise,score,slit,split,rend,nick,snick,notch,cleave,scratch,scrape,graze,abrade,wound,injure,hurt,damage,maim