📒 a part of a piece of clothing that covers all or part of your arm
📒 having sleeves of the type mentioned
📒 a stiff paper cover for a record
📒 a tube that covers a part of a machine to protect it
📒 a secret advantage, for example a piece of information or a skill, that you are ready to use if you need to
📒 to have an idea, a plan, etc. that will give you an advantage in a particular situation and that you keep secret until it is needed
📒 to have an idea, some plans, etc. that you keep ready to use if it becomes necessary
📒 to keep a plan or an idea secret until you need to use it
📒 to secretly think that something is funny
📒 to prepare to work or fight
📒 to allow your feelings to be seen by other people