一切經音義 49.73

49.73

嬰孩（於盈反下胡來反釋名曰胷前為嬰投之嬰前以乳養之故曰嬰兒孩小兒笑之也）。

嬰孩 (yu and ying fan [yū + yíng -> yīng]; the second character is hu and lai fan [hú + lái -> hái]; the Shiming states: the chest is called yīng; holding a child in front of the chest to nurse and raise it is why it is called yīng'ér [infant]; hái refers to the smiling of a small child).