1. superlative form of pipy; having the most piping quality; characterized by a thin, high-pitched sound
Usage: informal; comparative form is 'pipier'
2. superlative form of pipy; resembling or containing the most pipes; having prominent or visible pipes
Usage: technical; comparative form is 'pipier'

Examples

• The pipiest voice in the choir belonged to the youngest soprano.
• That's the pipiest sound I've ever heard from a musical instrument.
• The pipiest part of the organ produced notes that made everyone wince.
• Her pipiest laugh echoed through the hallway.
• The pipiest notes on the flute are difficult to control.