baby-talk

n unnatural or simplified language used by or to babies before they can speak properly 儿语（婴儿牙牙学语阶段所用或对其使用的一种不合规则的或简单语言）.

B.A., B.C., B/L, BA, baa, babble, babbler, babe, babel, baboon, baby, baby carriage, baby grand, baby tooth, baby-faced, baby-minder, baby-sit, baby-sitter, baby-sitting, baby-snatcher, babyhood, babyish, Babylonian, baccalaureate, baccarat, bacchanal, baccy, Bach, bachelor, bacillus, back, back and forth, back away, back down, back down off, back down/off, back number, back of, back out of, back road,