rock in WordNet English dictionary

1. pitching dangerously to one side
   rock  careen  sway  tilt 
   
2. 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."
   rock 'n' roll  rock'n'roll  rock-and-roll  rock and roll  rock  rock music 
   
3. hard bright-colored stick candy (typically flavored with peppermint)
   rock candy  rock 
   
4. a lump or mass of hard consolidated mineral matter
   "he threw a rock at me"
   rock  stone 
   
5. (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
   rock 
   
6. 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"
   rock  stone 
   

1. move back and forth or sideways
   "the ship was rocking"; "the tall building swayed"; "She rocked back and forth on her feet"
   rock  sway  shake 
   
2. cause to move back and forth
   "rock the cradle"; "rock the baby"; "the wind swayed the trees gently"
   rock  sway