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Learner's Dictionary
boulder
1 ENTRIES FOUND:
boulder
(noun)
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boulder
/
ˈ
boʊldɚ/
noun
plural
boulders
boulder
/
ˈ
boʊldɚ/
noun
plural
boulders
Learner's definition of BOULDER
[
count
]
:
a very large stone or rounded piece of rock
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