Definition of booster seat in English:

booster seat

Line breaks: boost¦er seat
(also booster cushion)


  • An extra seat or cushion placed on an existing seat for a small child to sit on.
    More example sentences
    • A booster seat helps the seat belt fit better for older children who are not big enough for the safety belt alone.
    • Many parents incorrectly believe that their child is too old for a child seat or a booster seat.
    • A belt-positioning booster seat will help position the seat belts on your child's body and will fit your child until she weights about 60-80 pounds.

More definitions of booster seat

Definition of booster seat in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
a powerful whirlpool in the sea