HAVE A CARD UP YOUR SLEEVE definition Cambridge English Dictionary Have something up your sleeve Meaning: To secretly have a plan, idea, or advantage that you can use lateroften as a surprise. Example sentence: Don't worry about the presentation; I've got Wear Your Heart on Your Sleeve: Meaning, Origin, and More Roll Up Your Sleeves: What Does It Mean? The phrase roll up your sleeves is an idiom that means to prepare yourself to get to workespecially for something challenging, demanding, Idiom of the Day: Roll up your sleeves Meaning Get ready to work hard or face a challenge. Example: The exams are near, it's time to roll up your