baby talk; infant speech
Refers to words and speech patterns used by or with infants, such as onomatopoeic expressions or simplified language.
"Wan-wan" is baby talk for a dog.
幼児語では、車のことを「ブーブー」と言うことがあります。
In baby talk, a car is sometimes called "buu-buu".
Compound of 幼児 (young child) and 語 (language, word).