Save Gender Masculine & Feminine Usage Spanish (Latin American), Mapuche Pronounced Pron. /kal.ˈfu/(Spanish) [ˈkɐ̝ʎ.fu](Mapudungun) [key·simplify] Other Forms FormsCalfu, Kalfu, Callfu, Kalfv, Kallfv, Kajfu, etc. Meaning & History Spanish form of Kallfü.