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verb \ˈräk\

Simple Definition of rock

  • : to move (someone or something) back and forth or from side to side

  • : to cause (something) to shake violently

  • : to cause (someone or something) to be upset or shocked

Full Definition of rock

  1. transitive verb
  2. 1 :  to move back and forth in or as if in a cradle

  3. 2 a :  to cause to sway back and forth <a boat rocked by the waves> b (1) :  to cause to shake violently (2) :  to daze with or as if with a vigorous blow <a hard right rocked the contender> (3) :  to astonish or disturb greatly <the scandal rocked the community>

  4. 3 :  to rouse to excitement (as by performing rock music) <rocked the crowd>

  5. intransitive verb
  6. 1 :  to become moved backward and forward under often violent impact; also :  to move gently back and forth

  7. 2 :  to move forward at a steady pace; also :  to move forward at a high speed <the train rocked through the countryside>

  8. 3 :  to sing, dance to, or play rock music

  9. 4 slang :  to be extremely enjoyable, pleasing, or effective <her new car rocks>

rock the boat
  1. :  to do something that disturbs the equilibrium of a situation

Examples of rock

  1. She gently rocked the baby to sleep.

  2. He rocked back and forth while he stood waiting.

  3. The boat rocked back and forth on the waves.

  4. An earthquake rocked the town.

  5. The building was rocked by an explosion.

  6. The news of the murders rocked the town.

  7. Their invention rocked the computer industry.

  8. The band rocked the crowd.

Origin of rock

Middle English rokken, from Old English roccian; akin to Old High German rucken to cause to move

First Known Use: 12th century

Synonym Discussion of rock

shake, agitate, rock, convulse mean to move up and down or to and fro with some violence. shake often carries a further implication of a particular purpose <shake well before using>. agitate suggests a violent and prolonged tossing or stirring <an ocean agitated by storms>. rock suggests a swinging or swaying motion resulting from violent impact or upheaval <the whole city was rocked by the explosion>. convulse suggests a violent pulling or wrenching as of a body in a paroxysm <spectators were convulsed with laughter>.




Definition of rock

  1. 1 :  a rocking movement

  2. 2 :  popular music usually played on electronically amplified instruments and characterized by a persistent heavily accented beat, repetition of simple phrases, and often country, folk, and blues elements


First Known Use of rock





Definition of rock

  1. 1 :  distaff

  2. 2 :  the wool or flax on a distaff

Origin of rock

Middle English roc, from Middle Dutch rocke; akin to Old High German rocko distaff

First Known Use: 14th century




Definition of rock

  1. 1 :  a large mass of stone forming a cliff, promontory, or peak

  2. 2 :  a concreted mass of stony material; also :  broken pieces of such masses

  3. 3 :  consolidated or unconsolidated solid mineral matter; also :  a particular mass of it

  4. 4 a :  something like a rock in firmness: (1) :  foundation, support (2) :  refuge <a rock of independent thought … in an ocean of parochialism — Thomas Molnar> b :  something that threatens or causes disaster —often used in plural

  5. 5 a :  a flavored stick candy with color running through b :  rock candy 1

  6. 6 slang a :  gem b :  diamond

  7. 7 a :  a small crystallized mass of crack cocaine b :  crack 9

  8. 8 :  the ball used in basketball

rock adjective
rock·like play \ˈräk-ˌlīk\ adjective
between a rock and a hard place also between the rock and the hard place
  1. :  in a difficult or uncomfortable position with no attractive way out

on the rocks
  1. 1 :  in or into a state of destruction or wreckage <their marriage is on the rocks>

  2. 2 :  on ice cubes <bourbon on the rocks>

Origin of rock

Middle English rokke, from Old French dialect (Norman & Picard) roke, from Vulgar Latin *rocca

First Known Use: 14th century


geographical name \ˈräk\

Definition of Rock

  1. river 300 miles (483 kilometers) S Wisconsin & N Illinois flowing S & SW into the Mississippi at Rock Island

Medical Dictionary


noun \ˈräk\

Medical Definition of rock

  1. 1:  a small crystallized mass of crack cocaine

  2. 2:  crack—called also rock cocaine

Seen and Heard

What made you want to look up rock? Please tell us where you read or heard it (including the quote, if possible).


February 12, 2016

of, relating to, or suggestive of marble

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