otkinuti

1. to tear off; to break off
   Otkinuo je komad hleba i dao ga detetu. — He broke off a piece of bread and gave it to the child.
   Pas mi je otkinuo dugme sa kaputa. — The dog tore a button off my coat.
2. (otkinuti se) to come off; to break off
   Otkinula mi se drška od torbe. — The handle of my bag came off.
3. colloq. (of money) to deduct; to withhold
   Otkinuli su mi pola plate za kaznu. — They docked half my salary as a penalty.
4. slang (+ na + acc.) to go crazy about; to be hooked on
   Otkinula sam na tu pesmu, slušam je ceo dan. — I'm crazy about that song, I've been listening to it all day.
5. slang (of a person) to lose it; to flip out
   Otkinuo je kad je čuo koliko to košta. — He lost it when he heard how much it costs.
   Otkinuli smo od smeha na toj predstavi. — We cracked up laughing at that show.

The imperfective is otkidati.