gash
/gæʃ; ɡæʃ/ n
~ (in sth) long deep cut or wound 长而深的切痕或伤口
a nasty gash in the arm, leg, etc 胳膊、 腿等上深而长的伤口
make a gash in the bark of a tree with a knife 用刀在树皮上割一道深而长的切口. gash, v [Tn, Tn.pr]
~ sth (on/with sth) make a gash in sth （在某物上）割一长而深的切口
gash one's arm on a piece of broken glass 胳膊被玻璃碎片划了一个大口子.