boulder

/หˆboสŠldษ™ษน/

IPA: /B OW1 L D ER0/

noun
  1. 1

    A large mass of stone detached from the surrounding land.

  2. 2

    A particle greater than 256 mm in diameter, following the Wentworth scale

  3. 3

    A large marble, in children's games.

  4. 4

    A session of bouldering; involvement in bouldering.

verb
  1. 1

    To engage in bouldering.

Source: https://en.wiktionary.org/wiki/boulder