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Word of the Day Tuesday, June 9, 2026

boulder

/ˈbaʊldər/ noun · British & US
Valid in UKValid in US
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What does boulder mean?

noun

A large rock, typically one that is rounded or irregular in shape and is found on the ground or on a hillside. A large, rounded mass of stone.

Example

"The hikers had to climb over a large boulder to reach the summit."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for boulder

Antonyms of boulder

Rhymes with boulder

Etymologically related