Ma'anar ƙamus na kalmar "geophytic" (wanda kuma aka rubuta "geophyte") yana da alaƙa da ko zayyana shuke-shuken da ke da kwararan fitila, tubers, ko corms a matsayin hanyar adana abinci a ƙarƙashin ƙasa a lokutan da ba su da kyau. Irin waɗannan tsire-tsire galibi tsire-tsire ne, ma'ana suna rayuwa har tsawon shekaru da yawa kuma suna mutuwa a ƙasa lokacin hunturu. Misalan tsire-tsire na geophytic sun haɗa da tulips, crocuses, da daffodils.