mrdati

1. (+ instr.) to move; to wiggle
   Mrdaj prstima da ti ne bude hladno. — Wiggle your fingers so you don't get cold.
   Pas mrda repom kad me vidi. — The dog wags its tail when it sees me.
2. to move; to budge
   Ne mrdaj, slikam te! — Don't move, I'm taking your picture!
   Ceo vikend ne mrda iz kuće. — He doesn't budge from the house all weekend.
3. colloq. (in the imperative) to get moving; to hurry up
   Ajde, mrdaj, zakasnićemo! — Come on, move it, we'll be late!

The body part usually goes in the instrumental: mrdati prstima, mrdati glavom; the accusative is also possible: mrdati prste.