A cewar ƙamus na Turanci na Oxford, kalmar "corm" an bayyana shi a matsayin ɗan gajeren tsiro mai kumbura a ƙarƙashin ƙasa wanda ke aiki a matsayin sashin ajiya don gina jiki kuma daga shi ne sabon harbe ya tashi. Yana da yawanci zagaye ko oval kuma ana samunsa a cikin tsire-tsire irin su crocuses, gladioli, da taros.
