What does rock mean?
Rock is one of the most versatile words in English. Geologically, it refers to the hard mineral material that forms cliffs, mountains, islands, and the solid ground beneath us; it can also mean an individual stone or boulder. In cultural usage, rock denotes a broad family of music styles that developed from rock and roll and now includes punk, metal, alternative, and many other genres. As a verb, rock means to move with a regular, rhythmic motion, as a person might rock a child or sway to music, and it can also mean to shock or unsettle someone. The phrase rock the boat extends this idea to disruption. The adjective normally relates to the musical genre, while the adverb is less common and chiefly literary or informal. Together, these senses connect the physical landscape, popular culture, movement, and emotional disturbance.
A naturally occurring solid material composed of minerals, or a piece or mass of that material.
"Geologists examined the rock samples to determine their mineral composition."
The collective sense refers to the material itself, while the count sense usually denotes a distinct stone or exposed mass.
A genre of popular music originating in rock and roll and encompassing many later styles.
"Their live set combines rock with folk and electronic music."
The sense is especially common in British and American usage and is often used as a broad cultural label.
A hard candy shaped like a rounded stone, or informally a valuable gemstone such as a diamond.
"The shop sold sticks of peppermint rock and small boxes of chocolates."
To move back and forth with a gentle, regular motion, or to cause something or someone to move in this way.
"She rocked the baby gently until it fell asleep."
The movement implied is usually rhythmic but not necessarily vigorous.
The standard plural of the noun, used for individual pieces or masses of stone.
"The cliffs are formed from layers of sedimentary rocks."
Rock is both the ground beneath our feet and the genre that has shaken the world for more than half a century.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of rock
The English word comes through Old French roche from Medieval Latin rocca, with Middle English forms including rokke. Its ultimate origin is uncertain; the medieval Latin word may have been borrowed from an unidentified source, and proposed Celtic connections are not securely established. Related Romance forms include Spanish roca, Portuguese rocha, French roche, and Italian roccia, all reflecting the same broad Latin tradition.
Related word forms
How rock is actually used
In its geological sense, rock is formal and technical, while in the music sense it is common in everyday English. The verb is often informal or colloquial when it means to move rhythmically, but it can be formal when it means to shake, dislodge, or unsettle. The adjective is usually used attributively, as in rock music or a rock concert.