Save Gender Feminine Usage English (Australian), English (New Zealand), English (British, Modern) Pronounced Pron. TAH-nee(Australian English) TAHR-nee(Australian English) [key] Other Forms FormsTarni, Tarnee, Tarney, Tarny, Tarnia Meaning & History Derives from either a Maori or Australian Aboriginal name meaning "salty water". It could also be used as a diminuitive of the Tania or Tara, or possibly a variation of Marnie.