natural object - an object occurring naturally; not made by man

achondrite - a stony meteor lacking chondrules

bedrock - solid unweathered rock lying beneath surface deposits of soil

boulder, bowlder - a large smooth mass of rock detached from its place of origin

calculus, concretion - a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body; "renal calculi can be very painful"

chondrite - a rock of meteoric origin containing chondrules

clastic rock - (geology) a rock composed of broken pieces of older rocks

crystallization, crystal - a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces

intrusion - rock produced by an intrusive process

outcrop, outcropping, rock outcrop - the part of a rock formation that appears above the surface of the surrounding land

pebble - a small smooth rounded rock

petrifaction - a rock created by petrifaction; an organic object infiltrated with mineral matter and preserved in its original form

sill - (geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock

stepping stone - a stone in a marsh or shallow water that can be stepped on in crossing

tor - a prominent rock or pile of rocks on a hill

wall rock - a rock immediately adjacent to a vein or fault

whinstone, whin - any of various hard colored rocks (especially rocks consisting of chert or basalt)

xenolith - (geology) a piece of rock of different origin from the igneous rock in which it is embedded

material, stuff - the tangible substance that goes into the makeup of a physical object; "coal is a hard black material"; "wheat is the stuff they use to make bread"

mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition

quartzite - hard metamorphic rock consisting essentially of interlocking quartz crystals

road metal - broken rock used for repairing or making roads

sedimentary rock - rock formed from consolidated clay sediments

sial - the granite-like rocks that form the outermost layer of the earth's crust; rich in silicon and aluminum

sima - rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium

metamorphic rock - rock altered by pressure and heat

crushed rock, gravel - rock fragments and pebbles

caliche - nitrate-bearing rock or gravel of the sodium nitrate deposits of Chile and Peru

shingling - (geology) sediment in which flat pebbles are uniformly tilted in the same direction

pumice, pumice stone - a light glass formed on the surface of some lavas; used as an abrasive

aphanite - fine-grained homogeneous rock (such as basalt) containing minerals undetectable by the naked eye

claystone - fine-grained rock consisting of compacted clay particles

dolomite - a kind of sedimentary rock resembling limestone but consisting almost entirely of the mineral dolomite

emery rock, emery stone - a mixture of emery dust and a binder; can be molded into grindstones

conglomerate, pudding stone - a composite rock made up of particles of varying size

fieldstone - stone that occurs naturally in fields; often used as building material

greisen - a granitic rock composed of quartz and mica

calc-tufa, tufa - a soft porous rock consisting of calcium carbonate deposited from springs rich in lime

magma - molten rock in the earth's crust

igneous rock - rock formed by the solidification of molten magma

limestone - a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals

marble - a hard crystalline metamorphic rock that takes a high polish; used for sculpture and as building material

gynaecologist, gynecologist, woman's doctor - a specialist in gynecology

good person - a person who is good to other people

candy - a rich sweet made of flavored sugar and often combined with fruit or nuts

popular music, popular music genre - any genre of music having wide appeal (but usually only for a short time)

heavy metal - loud and harsh sounding rock music with a strong beat; lyrics usually involve violent or fantastic imagery

art rock, progressive rock - a style of rock music that emerged in the 1970s; associated with attempts to combine rock with jazz and other forms; intended for listening and not dancing

acid rock, psychedelic rock - a musical style that emerged in the mid-1960s; rock music inspired by or related to drug-induced experience

punk rock, punk - rock music with deliberately offensive lyrics expressing anger and social alienation; in part a reaction against progressive rock

backbeat - a loud steady beat

backbeat - a loud steady beat

pitching, lurch, pitch - abrupt up-and-down motion (as caused by a ship or other conveyance); "the pitching and tossing was quite exciting"

roll - move, rock, or sway from side to side; "The ship rolled on the heavy seas"

rock, sway - cause to move back and forth; "rock the cradle"; "rock the baby"; "the wind swayed the trees gently"

nutate - rock, sway, or nod; usually involuntarily

swag - sway heavily or unsteadily

move back and forth - move in one direction and then into the opposite direction

totter - move without being stable, as if threatening to fall; "The drunk man tottered over to our table"

move, displace - cause to move, both in a concrete and in an abstract sense; "Move those boxes into the corner, please"; "I'm moving my money to another bank"; "The director moved more responsibilities onto his new assistant"

rock, sway, shake - move back and forth or sideways; "the ship was rocking"; "the tall building swayed"; "She rocked back and forth on her feet"