have a trick, some more tricks, etc. up your sleeveidiomPart ofsleevehave a trick, some more tricks, etc. up your sleevehave a trick, some more tricks, etc. up your sleeve — idiomidiom1. To have secret ideas or plans ready to use if necessary.1.idiomDefinitionTo have secret ideas or plans ready to use if necessary.ExampleThe chef has a few tricks up his sleeve for the cooking contest.Aiden always has some more tricks up his sleeve to surprise us.