boulder

noun

Stress: first syllable

Syllables: boul-der (2)

English Definition

A large rock, typically one that has been worn smooth by erosion.

Example Sentence

A huge boulder blocked the road.

US IPA /ˈboʊl.dɚ/

UK IPA /ˈbəʊl.də(r)/

rock stone megalith crag

pebble grain of sand