Kindergartner (noun)

1. A child attending kindergarten, typically 5 years old or younger.
2. A young student in their first year of formal education.

Origin:

The word 'kindergartner' is a combination of 'kindergarten' and '-er' meaning a child attending kindergarten.

Examples:

1. The kindergartner was eager to learn, soaking up new information like a sponge.
2. The kindergartner was just learning to read and write, making great progress in just a few months.
3. The kindergartner was having fun playing with blocks, coloring, and singing songs.
4. The kindergartner was making new friends, enjoying the social aspect of school as much as the educational aspect.
5. The kindergartner was already a seasoned traveler, taking the bus to school each day with ease.