1. A lump or mass of hard consolidated mineral matter
   "he threw a rock at me";
   - stone
    
2. Material consisting of the aggregate of minerals like those making up the Earth's crust
   "that mountain is solid rock";
   - stone
    
3. 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"; "The Beatles helped revolutionize rock 'n' roll in the 1960s";
   - rock 'n' roll, rock'n'roll, rock-and-roll, rock and roll, rock music, R&R, R'n'R [non-standard]
    
4. (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"
    
5. [Brit] Hard bright-coloured stick candy (typically flavoured with peppermint)
   "The seaside shop sold sticks of colourful rock candy";
   - rock candy [N. Amer]
    
6. Pitching dangerously to one side
   "The ship's rock in the storm alarmed the passengers";
   - sway, tilt

1. Move back and forth or sideways
   "the ship was rocking"; "She rocked back and forth on her feet";
   - sway, shake
    
2. Cause to move back and forth
   "rock the cradle";
   - sway
    
3. [informal] Be excellent, outstanding, or impressive; to perform exceptionally well
   "The band rocked at the concert";
   - rule [informal], kick ass [N. Amer, informal], slay [informal]
    
4. Disturb the normal state; shock or distress
   "Confidence is rocked by news of 158 textile job cuts"
    
5. Dance to or play rock music
   "The band rocked all night at the concert"

1. United States gynaecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
   - John Rock

Sounds like: roam, ro

Derived forms: rocked, rocks, rocking

Type of: candy, confect, displace, excel, good person, gynaecologist [Brit, Cdn], gynecologist [N. Amer], lolly [Austral, NZ], lurch, material, move, move back and forth, natural object, pitch, pitching, popular music, popular music genre, rule, stand out, stuff, surpass, sweet [Brit], sweetie [Brit, informal]

Encyclopedia: Rock, Rock, Rock