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, HAVE A CARD UP YOUR SLEEVE Cambridge English Dictionary 230 Ace Up Sleeve Stock Photos Free & Royalty Free Stock Photos from Dreamstime Ace Up Your Sleeve Teachers Pay Teachers have another card up your sleeve have another card up your sleeve LDOCE card up sleeve Meaning Definition To have a "card up your sleeve" means to have a secret plan or advantage that you can use when needed, something you're keeping hidden until