A cikin tsirrai, pistil mai sauƙi yana nufin wani nau'in gabobin mace na haihuwa da ake samu a cikin tsire-tsire masu furanni, wanda ya ƙunshi tsari guda ɗaya, tsakiya, tsayin daka da ake kira ovary, wanda ke ɗauke da kwai ɗaya ko sama da haka, da kuma salon da aka binne da abin kunya. Pistil mai sauƙi ana kiranta da “mai sauƙi” domin ya ƙunshi raka’a ko tsari ɗaya kawai, sabanin wani fili mai haɗaɗɗiya, wanda ya ƙunshi sifofi biyu ko fiye. Kalmar “pistil” ana amfani da ita wajen yin nuni ga bangaren haihuwa na mace na fure, wanda ya hada da kwai, salo, da kyama.