What is Wind up?
Wind up is (verb) 1. to twist round and round She was winding the string up into a ball. 2. to turn a key to make a machine work When did you wind up the clock or wind the clock up? 3. to turn a key to make something go up Wind up your window if it starts to rain. 4. to end up They wound up owing the bank thousands of pounds. 5. to finish The meeting wound up at five o’clock. 6. to wind up a company to put a company into liquidation The court ordered the company to be wound up. 7. to make someone annoyed He only did it to wind you up.
source: Easier English, Student Dictionary Upper Intermediate Level