booster seat

noun

: a portable seat that is placed on or attached to a chair or an automobile seat in order to raise a child to a higher position

… they should use a booster seat until they are 8 years old or at least 4 feet, 9 inches tall. Only after that can they ride in the front seat, and even then the back is always safer.

—Denise Milosevich

She's too big for a high chair, but needs to sit on her knees to keep her head fully above the dining room table. And she doesn't want a booster seat. She'll boost herself, thank you very much.

—Dave Manley

called also booster chair

Examples of booster seat in a Sentence

Recent Examples on the Web

There was only one booster seat in the vehicle and the youngest child was not in a child safety seat, police said. —Kirsten Fiscus, The Tennessean, 19 Aug. 2024

Kids in Cars also has tip sheets for car seats and for booster seats. —Nicole Villalpando, Austin American-Statesman, 4 Nov. 2024

State law now more clearly specifies age groups for forward- or rear-facing car seats, booster seats and belts. —Alex Derosier, Twin Cities, 1 Aug. 2024

Maricela grabbed the booster seat and followed as Ariel started crossing the road. —Melissa Sanchez, ProPublica, 24 Oct. 2024

Word History

First Known Use

1954, in the meaning defined above