A young child or toddler — generally a small child who has not yet entered school.
幼児が庭で砂遊びをしている。
A toddler is playing in the sandbox in the yard.
幼児向けの絵本を図書館で借りた。
I borrowed picture books for young children from the library.
幼児教室に通わせている親が多い。
Many parents send their young children to preschool classes.
In legal contexts, a child typically defined as older than one year but not yet of school age.
児童福祉法では、幼児の保護について具体的な規定がある。
Under the Child Welfare Act, there are specific provisions for the protection of young children.