# coastline

/ˈkoʊstˌɫaɪn/ (US) · /kˈəʊslaɪn/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/coastline
Updated: 2026-05-04

## Definition

the line where the land meets the sea. It marks the edge of the continent or island.

For teachers: the boundary line separating land from the sea or ocean.

## Examples

- We walked along the coastline for an hour.
- The new hotel sits right on the coastline, offering guests direct access to the beach.
- Rising sea levels threaten to reshape the coastline, forcing communities to build higher walls and retreat from vulnerable shorelines.

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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.