choo choo

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choo choo /ˈtʃuːˌtʃuː/ noun
plural choo choos
choo choo
/ˈtʃuːˌtʃuː/
noun
plural choo choos
Learner's definition of CHOO CHOO
informal
[count] : 1train 1 used by young children or by adults speaking to young children
called also choo choo train
[noncount] : the sound a train makes used by young children or by adults speaking to young children