pen·ny·whis·tle also penny whistle 
(pĕnē-wĭs′əl, -hwĭs′-)
(pĕnē-wĭs′əl, -hwĭs′-)n.
An inexpensive fipple flute, usually having a plastic mouthpiece and a tin body.
- powerboat
- power brake
- power broker
- powerbroker
- power chord
- power cycle
- power dive
- power-dive
- power drill
- powerful
- powerfully
- powerfulness
- powerhouse
- power kite
- powerless
- powerlessly
- powerlessness
- powerlifting
- power mower
- power of appointment
- power of attorney
- power pack
- power plant
- power play
- power politics