Punjab

Punjab is derived from the medieval Persian language, in which it means "[land of] five rivers" (panj, "five"; āb, "water", cognate with Latin aqua, see OED, "Punjab"; Online Etymological Dictionary, "aqua-"), referring to five tributaries of the Indus river: the Jhelum, the Chenab, the Ravi, the Sutlej and the Beas.