bolster

1 of 2

noun

bol·​ster ˈbōl-stər How to pronounce bolster (audio)
1
: a long pillow or cushion
2
: a structural part designed to eliminate friction or provide support or bearing (see bearing sense 5)

bolster

2 of 2

verb

bolstered; bolstering ˈbōl-st(ə-)riŋ How to pronounce bolster (audio)

transitive verb

1
: to support with or as if with a bolster : reinforce
lay bolstered up in bed
extra men will bolster already augmented dock detailsStanley Levey
2
: to give a boost to
news that bolstered his spirits
bolsterer noun

Examples of bolster in a Sentence

Verb She came with me to bolster my confidence. a convincing argument that was bolstered by the speaker's reputation She is thinking of ways to bolster her career.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
Props can be blankets, pillows, blocks, bolsters, and straps. Cory Martin, Verywell Health, 16 Oct. 2024 Cue the viridian green of the new Amedeo bed, with its padded structure and fine silk upholstery entirely hand-embroidered with a jungle motif that continues on the bedspread and the bolster pillows, or the deep red of the Pascal armchair with a dragon embroidered on the back. Luisa Zargani, Footwear News, 14 Apr. 2025
Verb
Bright’s absence aside, the midfield and defence are largely unchanged from the team’s runs to the final in their previous two major tournaments, and the latter has been bolstered by the availability of Leah Williamson, after the England captain missed the World Cup in 2023 with a knee injury. Jacob Whitehead, New York Times, 6 June 2025 Lin bolsters this perspective with scenes of Joe posting online about how medication weakens his resolve and becoming obsessed with school shootings. Lovia Gyarkye, HollywoodReporter, 6 June 2025 See All Example Sentences for bolster

Word History

Etymology

Noun and Verb

Middle English, from Old English; akin to Old English belg bag — more at belly

First Known Use

Noun

before the 12th century, in the meaning defined at sense 1

Verb

1508, in the meaning defined at sense 1

Time Traveler
The first known use of bolster was before the 12th century

Browse Nearby Words

Cite this Entry

“Bolster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bolster. Accessed 10 Jun. 2025.

Kids Definition

bolster

1 of 2 noun
bol·​ster ˈbōl-stər How to pronounce bolster (audio)
1
: a long pillow or cushion
2
: a structural part designed to eliminate friction or provide support

bolster

2 of 2 verb
bolstered; bolstering -st(ə-)riŋ How to pronounce bolster (audio)
: to support with or as if with a bolster
also : reinforce
came with me to bolster my spirits
bolsterer noun

Legal Definition

bolster

transitive verb
bol·​ster
ˈbōl-stər
: to use evidence usually improperly to give weight to (evidence already introduced)

More from Merriam-Webster on bolster

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