gash1
¦ noun a long, deep slash, cut, or wound.
¦ verb make a gash in.
Origin
ME garse, from OFr. garcer 'to chap, crack', perh. based on Gk kharassein 'sharpen, scratch, engrave'.
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gash2
¦ noun Brit. informal rubbish or waste.
Origin
early 20th cent. (orig. in naut. use): of unknown origin.