チューチュー

adverb, adverb taking the 'to' particle

squeak; cheep; peep

Mimics the high-pitched sound of small animals like mice or chicks. Often used adverbially with と.

• ネズミがチューチューと鳴ないている。

  The mouse is squeaking.

adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

slurp; sucking noisily

Represents the sound of sucking liquid through a straw or similar. Can be used as a suru-verb (チューチューする).

• 子こどもがジュースをチューチュー吸すっている。

  The child is slurping juice noisily.

noun

mouse (child's word)

Childish word for a mouse, derived from the squeaking sound. Used by or to small children.

• ほら、チューチューがいるよ。

  Look, there's a mouse!