booster seat(redirected from booster seats)
Also found in: Medical.
Related to booster seats: Walmart
1. A car seat for a small child that lifts the child by several inches, designed for use with an adult seat belt.
2. A seat placed on top of the seat of a chair, used to elevate a small child at a table.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.