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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121. Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago.
122. He was chipping away at the rock with a hammer.
123. He managed to cling on to a ledge 40ft down the rock face.
124. Rock 'n' roll music was largely co-opted from the blues.
125. It took them 3 hours to wrestle the heavy rock into place.
126. Country music was undoubtedly one of the forerunners of rock and roll.
127. Their work was taken up with boring and blasting rock with gelignite.
128. This machine is made to crush the rock into powder.
129. A large rock, almost 200 feet high, reared up in front of them.
130. Hadn't Mark heard that cooking was the new rock 'n' roll?
131. The tide was out and they walked among the rock pools.
132. There was a niche in the rock where the path ended.
133. He failed to lift the rock in spite of all his exertions.
134. Earthquakes happen when stresses in rock are suddenly released as the rocks fracture.
135. He began living out his rock "n" roll fantasy during his last year in law school.
136. Slabs of rock had slipped sideways in the remote past, and formed this hole.
137. The climber tried to gain a purchase with his foot on a narrow edge of rock.
138. By the 80 s, punk rock had really had its heyday.
139. You really know you've made it when they enshrine you in the Rock 'n' Roll Hall of Fame.
140. I thought he was kidding when he said he was going out with a rock star.
141. The record was the brainchild of rock star Bob Geldof.
142. The house stands on a shelf of rock among pines.
143. Classical music leaves me absolutely cold[sentencedict.com], but I love rock.
144. His foot caught in a rock and he pitched forwards.
145. The fast-moving water had scoured out a channel in the rock.
146. The volcano spewed a fountain of molten rock 650 feet in the air.
147. She launched herself on the rock world with a brilliant album.
148. He noticed that a river of liquid rock was coming towards him.
149. She had toured as a backing musician for a rock star.
150. This rock can be ground down for road - building material.