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.
- heterostyled
- heterostylous
- heterostyly
- heterotaxia
- heterotaxic
- heterotaxy
- heterothallic
- heterothallism
- heterotic
- heterotopia
- heterotopic
- heterotroph
- heterotrophic
- heterotrophically
- heterotrophy
- heterotypic
- heterotypical
- Heterousian
- heterozygosis
- heterozygosity
- heterozygote
- heterozygous
- heth
- hetman
- heulandite