To convey a liquid or gas through a pipe or system of pipes. The company piped natural gas to the new housing development.
To play a tune on a pipe or similar wind instrument. The musician piped a lively tune that got everyone dancing.
To transmit information or data electronically. The live feed was piped directly to the main screen in the auditorium.
To speak or sing in a high-pitched voice. She piped up with a cheerful greeting as soon as she saw her friend.
To decorate a cake or other food item by squeezing icing or another substance through a piping bag. The baker piped intricate designs onto the wedding cake.