A highchair is a tall chair for a baby or small child. It raises up the child to a height that's easier for adults to feed. High chairs usually have a tray to hold food. Sometimes the tray can be removed so that the chair can be pulled up to a regular table. By holding the child in a safe place, the chair also serves to create a protective environment.
Make sure your highchair is the right size for the child. Don't leave a child unattended in a highchair for too long.