Japanese

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For pronunciation and definitions of ブーブー – see the following entry.
ぶうぶう
[adverb] honking
[adverb] grumbling; complaining
[noun] (childish) car; vroom-vroom
[noun] (childish) pig; piggy; oinky
(This term, ブーブー (būbū), is the katakana spelling of the above term.)