English to English

noun (n)

• a large smooth mass of rock detached from its place of origin

  besar halus mass of rock terlepas dari tempatnya asalnya

  Synonym:
  boulder
  

  source: wordnet30
• A large stone, worn smooth or rounded by the action of water; a large pebble.

  batu besar, dikenakan halus atau dibulatkan oleh tindakan air; pebble yang besar.

  source: webster1913