Synonym: bob, flounder, roll, stone, sway, swing, toss, tumble. Similar words: rocky, frock, rocket, bedrock, crockery, rock salt, skyrocket, rock the boat. Meaning: [rɑk /rɒk] 
n. 1. a lump or mass of hard consolidated mineral matter 2. material consisting of the aggregate of minerals like those making up the Earth's crust 3. United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984) 4. (figurative) someone who is strong and stable and dependable 5. hard bright-colored stick candy (typically flavored with peppermint) 6. a genre of popular music originating in the 1950s; a blend of Black rhythm-and-blues with White country-and-western 7. pitching dangerously to one side. v. 1. move back and forth or sideways 2. cause to move back and forth.
n. 1. a lump or mass of hard consolidated mineral matter 2. material consisting of the aggregate of minerals like those making up the Earth's crust 3. United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984) 4. (figurative) someone who is strong and stable and dependable 5. hard bright-colored stick candy (typically flavored with peppermint) 6. a genre of popular music originating in the 1950s; a blend of Black rhythm-and-blues with White country-and-western 7. pitching dangerously to one side. v. 1. move back and forth or sideways 2. cause to move back and forth. 
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181. The water is going to cleave a channel into the rock.
182. Whole ridges of grey rock project from the water, but we cast anchor for a while.
183. Constituting of earth crust can from the chemical element, mineral, rock three aspects to explain.
184. Suddenly a cantaloupe - size rock tumbled from the truck's load.sentencedict.com
185. A usually coarse - grained igneous rock composed chiefly of calcic plagioclase and pyroxene.
186. Coal is a sedimentary rock composed principally of organic carbonaceous macerals and inorganic minerals.
187. Clastic rock and low - grade metamorphic rock , and the non - disease area is mainly in the coal stratum.
188. Drizzt found a flat rock to sit upon and bade Catti - brie to join him.
189. The zimenqiao Formation silicalite of Lower Carboniferous is the country rock of Changkeng Au - Ag deposit.
190. To be a successful burial site, a body of rock needsto be more than 1 km underground.
191. Coal is a sedimentary rock composed principally of carbonaceous macerals and inorganic minerals.
192. Huck followed. Four avenues opened out of the small cavern which the great rock stood in.
193. Is kidney stone course returns after clastic rock operation painful how to do?