wa·hoo 4 
(wäh) Chiefly Western US
(wäh) Chiefly Western US interj.
Used to express exuberance.
n. pl. wa·hoos
An exuberant cry: He let out a wahoo. Also called regionally rebel yell.
- photometrist
- photometry
- photomicrograph
- photomicrographer
- photomicrographic
- photomicrography
- photomicroscope
- photomicroscopic
- photomontage
- photomultiplier
- photomural
- photomuralist
- photon
- photonegative
- photonic
- photonics
- photonuclear
- photo-offset
- photo op
- photo opportunity
- photoperiod
- photoperiodic
- photoperiodism
- photophilic
- photophilous