Kalmar “gilled” ita ce juzu’in fi’ili “gill,” wanda ke nufin ƙwace gabobin jiki ko numfashi daga kifi ko wani dabbar ruwa. Kalmar “gilled” ita ma sifa ce da ke bayyana wani abu da ke da ƙugiya ko kuma an sanye shi da ƙulli don numfashi, kamar kifi ko wani dabbar ruwa. Alal misali, "Haliyoyin da aka haɗe kamar kifi da masu amphibians suna buƙatar ruwa don shaƙa."
