Certainly! Here are some words that start with a for preschool may be suitable for preschoolers:

Apple

Ant

Alligator

Airplane

Astronaut

Arrow

Acorn

Anchor

Apron

Angel

Aquarium

Axe

Alphabet

Arm

Aunt

Alarm

Adventure

Acrobats

Autumn

Air

These words cover a range of common objects and concepts that can be interesting and educational for preschool children.