thun·der·head 
(thŭndər-hĕd′)
(thŭndər-hĕd′)n.
The swollen upper portion of a thundercloud, usually associated with the development of a thunderstorm.
- Maxfield Frederick
- Max Forrester
- Max Goldmann.
- maxi
- maxi dress
- maxidress
- maxilla
- maxillary
- maxilliped
- maxillofacial
- Maxim
- maxim
- maxima
- maximal
- maximalist
- maximally
- Maxim gun
- Maximilian
- Maximilian I
- Maximilian II
- Maximilian sunflower
- Maximilien de Béthune.
- Maximilien François Marie Isidore de
- maximization
- maximize