名詞 preschool:

1. an educational institution for children too young for elementary school

pre.school

adj.（形容詞）
Of, relating to, intended for, or being the early years of childhood that precede the beginning of elementary school.
學(xué)齡前的，入學(xué)前的：在小學(xué)教育開始之前即兒童時代早期的，與這有關(guān)的或為此服務(wù)的
n.（名詞）

A school for children who are not old enough to attend kindergarten; a nursery school.
保育園：為年齡未夠上幼兒園的兒童服務(wù)的學(xué)校；托兒所