wind-up 1 BrE AmE British English , wind‧up American English /ˈwaɪnd ʌp/ noun
1 . [countable] British English informal something that you say or do in order to make someone angry or worried, as a joke
2 . [singular] a series of actions that are intended to complete a process, meeting etc:
The President made a statement at the windup of the summit in Helsinki.