From Longman Dictionary of Contemporary Englishfishnet stockingsfish‧net stock‧ings /ˌfɪʃnet ˈstɒkɪŋz $ -ˈstɑː-/ (also fishnet tights, fishnets /ˈfɪʃnets/ British English) [plural] noun DCCstockings with a pattern of small holes that make them look like a net
Examples from the Corpus
fishnet stockings• White kicked off her shoes and the audience howled, for under her fishnet stockings were toes stuck with corn plasters.• Her legs, in fishnet stockings, move gracefully, she fans herself with an ostrich feather. 