Other forms: preschoolers
A preschooler is a child old enough to play and talk but not yet at school. A noisy preschooler, activities for preschoolers, my preschooler.
It covers roughly the years from three to five, which is when most of a child's first language is picked up. The word is commoner in America and in child-development writing than in ordinary British speech.
1nounpreschoolerA child old enough to play but not yet at school.
“The library runs a story hour for preschoolers.”
preschooler is a child.
From preschool + -er.
Etymology from Wiktionary, CC BY-SA