[ noun ] a child who attends a preschool or kindergarten <noun.person>
All five entries _ plus a pint-size speedster driven by a preschooler _ had large panels of photovoltaic cells, which turn sunlight into electricity to run electric motors and charge batteries.
Preschoolers consume six times more fruit than the average adult, and the NRDC estimated that the average preschooler's cancer risk from exposure to UDMH in their first six years was approximately one case for every 4,000 preschoolers exposed.