choo-choo 
(chch′)
(chch′)n. pl. choo-choos
Informal
Informal
A locomotive train.
[From baby-talk imitation of the sound of a locomotive whistle.]
- Catharist
- catharsis
- cathartic
- Cathay
- cathead
- cathect
- cathectic
- cathedra
- cathedral
- cathedral ceiling
- cathepsin
- Cather
- Catherine
- Catherine
- Catherine
- Catherine de' Medici
- Catherine de Médicis
- Catherine I
- Catherine II
- Catherine of Aragon
- Catherine of Braganza
- Catherine of Siena
- "Catherine the Great."
- catherine wheel
- catheter