pie /pai/ n. ［c］ & ［u］(肉或水果的)馅饼：an apple pie 苹果馅饼；a meat pie 肉馅饼；a mud pie(小孩玩做成的)泥饼 pie in the sky空头支票，空中馅饼：Their plans to set up their own business are just pie in the sky. 他们计划办自己的公司那还是个空中馅饼呢。