boulder
1. [ noun ] (geology) a large smooth mass of rock detached from its place of origin
Synonyms: bowlder
Related terms: rock river_boulder glacial_boulder shore_boulder Plymouth_Rock
2. [ noun ] (government,geography) a town in north central Colorado; Rocky Mountains resort center and university town
Related terms: town Colorado
Similar spelling:   bouldery
  bouldered
  bowlder
  Bolter
  Boulter
  Boelter