boulder
Boulder (noun) means a large rock, especially one that has broken off and lies separate from the surrounding land. Example: “They stopped to rest on a huge boulder beside the trail.”
How to use boulder
Learner’s notesIn plain EnglishA big loose rock, or (as a verb) to climb short rock routes without ropes.
Word forms
- Plural
- boulders
- Third person singular
- boulders
- Past tense
- bouldered
Fill the gap
Can you complete this real example?
They stopped to rest on a huge _____ beside the trail.
Etymology
From Middle English "boulder stone," probably from an Old Swedish word for a large rock in a stream that made the water roar as it passed.