buoy

1 of 2

noun

Synonyms of buoynext
1
: float sense 2
especially, nautical : a floating object moored to the bottom to mark a channel or something (such as a shoal) lying under the water
swam out toward the buoy
2

Illustration of buoy

Illustration of buoy
  • buoy 1

buoy

2 of 2

verb

buoyed; buoying; buoys

transitive verb

1
: to mark by or as if by a float or buoy
buoy an anchor
2
a
: to keep afloat
a raft buoyed by empty oil drums
b
: support, uplift
… an economy buoyed by the dramatic postwar growth of industry …Time
3
: to raise the spirits of
usually used with up
hope buoys him up

intransitive verb

: float
usually used with up
They buoyed up like a cork.

Examples of buoy in a Sentence

Verb The tax breaks should help to buoy the economy.
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
Zones on the water are marked with visible buoys. Connie Etemadi, USA Today, 7 Feb. 2026 Anchors and buoys hang from the walls, among the rest of the navy and white details which trim the snug space. Becky Duffett, Bon Appetit Magazine, 27 Jan. 2026
Verb
Seattle used a dominant defensive performance to buoy their win over New England. Ryan Gaydos, FOXNews.com, 9 Feb. 2026 The company’s financial results were buoyed by strong performances from Taco Bell and KFC, which saw same-store sales increase by 7% and 3% in the fourth quarter, respectively. Iris Kwok, Los Angeles Times, 6 Feb. 2026 See All Example Sentences for buoy

Word History

Etymology

Noun and Verb

Middle English boye, probably from Middle Dutch boeye; akin to Old High German bouhhan sign — more at beacon

First Known Use

Noun

13th century, in the meaning defined at sense 1

Verb

1596, in the meaning defined at transitive sense 1

Time Traveler
The first known use of buoy was in the 13th century

Browse Nearby Words

Cite this Entry

“Buoy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buoy. Accessed 15 Feb. 2026.

Kids Definition

buoy

1 of 2 noun
1
: a floating object anchored in a body of water to mark a channel or warn of danger
2

buoy

2 of 2 verb
1
: to keep from sinking : keep afloat
2
: to brighten the mood of
the news buoyed him up

More from Merriam-Webster on buoy

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster