# buoy

/ˈbui/ (US) · /bˈɔɪ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/buoy
Updated: 2026-05-18

## Definition

a floating object that helps ships stay on course or warns them of danger. It can also be a small island or a person who keeps someone's spirits up.

For teachers: a floating object used to mark a position on water, provide a safe anchorage, or warn of hazards. In a figurative sense, it refers to a person who provides emotional support or a small island.

## Examples

- The ship followed the red buoy to the harbor.
- The lighthouse keeper maintained several buoys to guide the vessels safely through the rocky coastline.
- While the physical buoys were essential for navigation, the crew relied on the buoy of their captain's steady leadership to maintain morale during the storm.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.