A pointed or projecting rock, a peak, a crag; a detached mass of rock, a boulder or large stone. Also figurative and in extended use.

A large piece of stone; a boulder. Cf. rock, n.1 3a. Obsolete.

A large detached mass of such material; a boulder or large stone.

A flint nodule; a boulder or pebble; often collective.

Scottish. A large detached stone or boulder.

= boulder, n.1

Geology. A detached mass of rock; a rolled stone or boulder. Now only dialect.

spec. Geology. A large weather-worn mass or block of stone, frequently carried by natural forces to a greater or less distance from the parent…

= lost rock n.

a stray mass of rock, foreign to the surrounding strata, that has been transported from its original site, apparently by glacial action.

a stray mass of rock, foreign to the surrounding strata, that has been transported from its original site, apparently by glacial action.

a travelled boulder.

A large stone; a boulder.

a loose stone embedded in clay; a boulder: = tumbler, n. 8.

an erratic boulder.