Search Result for "choo-choo": 
Wordnet 3.0

NOUN (1)

1. a child's word for locomotive; 



The Collaborative International Dictionary of English v.0.48:

choo-choo \choo-choo\ n.
   a train or a locomotive; -- a child's word. [Baby talk]
   [WordNet 1.5]


WordNet (r) 3.0 (2006):

choo-choo
    n 1: a child's word for locomotive