0 past participle of do --
1 If something is done, or you are done with it, it is finished, or you have finished doing, using it, etc.: --
2 cooked: --
3 said to show that you accept someone's offer or that you agree to something: --
"I'll give you 20 quid for all five of them." "Done!"
4 past participle of do --
“I’ll give you $25 for the chair.” “Done!”
5 a formally arranged and agreed plan that will certainly happen: --
"The merger is far from a done deal," said a spokeswoman.
She could get that essay done in a couple of hours if she really tried.
There is essential work to be done before the building can be re-occupied.