1. (noun) rock, stone
a lump or mass of hard consolidated mineral matter
"he threw a rock at me"
2. (noun) rock, stone
material consisting of the aggregate of minerals like those making up the Earth's crust
"that mountain is solid rock"; "stone is abundant in New England and there are many quarries"
3. (noun) Rock, John Rock
United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
4. (noun) rock
(figurative) someone who is strong and stable and dependable
"he was her rock during the crisis"; "Thou art Peter, and upon this rock I will build my church"--Gospel According to Matthew
5. (noun) rock candy, rock
hard bright-colored stick candy (typically flavored with peppermint)
6. (noun) rock 'n' roll, rock'n'roll, rock-and-roll, rock and roll, rock, rock music
a genre of popular music originating in the 1950s; a blend of black rhythm-and-blues with white country-and-western
"rock is a generic term for the range of styles that evolved out of rock'n'roll."
7. (verb) rock, careen, sway, tilt
pitching dangerously to one side
8. (verb) 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"
9. (verb) rock, sway
cause to move back and forth
"rock the cradle"; "rock the baby"; "the wind swayed the trees gently"
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Definition of 'rock' 
