It means "do" or "make". It's used to give commands or instructions.
Here are some examples:
* Karo! (Do it!)
* Yeh karo! (Do this!)
* Kaam karo! (Do the work!)
* Khana banaao karo! (Make food!)
It's important to note that "karo" is a versatile word and can be used in many different contexts. You can use it to tell someone to do something specific, to ask someone to do something for you, or even to give advice.