žeđ

1. thirst
   Umirem od žeđi, imaš li vode? — I'm dying of thirst, have you got any water?
   Ništa ne gasi žeđ kao hladna voda. — Nothing quenches thirst like cold water.
2. (+ za + instr.) thirst; craving
   Ona ima veliku žeđ za znanjem. — She has a great thirst for knowledge.

To say "I'm thirsty" Serbians usually say žedan sam rather than using žeđ.