rock the boat, Informal. to disrupt the smooth functioning or routine of something: Don't rock the boat by demanding special treatment from management.
Origin of rock
2
before 1100;Middle Englishrocken,Old Englishroccian; cognate with Middle Dutchrocken; akin to Germanrücken;Old Norserykkja to jerk
Related formsrock·a·ble, adjectiverock·ing·ly, adverbun·rocked, adjective
geologyany aggregate of minerals that makes up part of the earth's crust. It may be unconsolidated, such as a sand, clay, or mud, or consolidated, such as granite, limestone, or coalSee also igneous, sedimentary, metamorphic
any hard mass of consolidated mineral matter, such as a boulder
mainlyUS, Canadian and Australiana stone
a person or thing suggesting a rock, esp in being dependable, unchanging, or providing firm foundation
Britisha hard sweet, typically a long brightly-coloured peppermint-flavoured stick, sold esp in holiday resorts
between a rock and a hard placehaving to choose between two equally unpleasant alternatives
on the rocks
in a state of ruin or destitution
(of drinks, esp whisky) served with ice
Word Origin for rock
C14: from Old French roche, of unknown origin
rock
2
verb
to move or cause to move from side to side or backwards and forwards
to reel or sway or cause (someone) to reel or sway, as with a violent shock or emotion
(tr)to shake or move (something) violently
(intr)to dance in the rock-and-roll style
miningto wash (ore) or (of ore) to be washed in a cradle
(tr)to roughen (a copper plate) with a rocker before engraving a mezzotint
(tr)slang, mainlyUSto impress by wearing (an item of clothing) or playing (a musical instrument)She can still rock a miniskirt; He rocks a guitar like nobody’s business
rock the boatinformalto create a disturbance in the existing situation
"moving back and forth or to and fro," late 14c., present participle adjective from rock (v.1). Of music, from 1949 (see rock (v.2)). Rocking-horse is first recorded 1724; rocking-chair is from 1766.
rock
n.1
"stone, mass of mineral matter," c.1300, from Old English rocc (e.g. stanrocc "stone rock or obelisk") and directly from Old North French roque, which is cognate with Medieval Latin rocca (8c.), from Vulgar Latin *rocca, of uncertain origin, according to Klein sometimes said to be from Celtic (cf. Breton roch).
In Middle English it seems to have been used principally for rock formations as opposed to individual stones. Meaning "precious stone, especially a diamond," is 1908, U.S. slang. Meaning "crystallized cocaine" is attested from 1973, in West Coast U.S. slang. Figurative use for "sure foundation" (especially with reference to Christ) is from 1520s; but also from 1520s as "source of danger or destruction," in reference to shipwrecks (e.g. on the rocks). Also used attributively in names of animals that frequent rocky habitats, e.g. rock lobster (1843). Between a rock and a hard place first attested 1921:
to be between a rock and a hard place, vb. ph. To be bankrupt. Common in Arizona in recent panics; sporadic in California. ["Dialect Notes," vol. V, part iv, 1921]
Rock-ribbed is from 1776, originally of land; figurative sense of "resolute" first recorded 1887. Rock-happy (1945) was U.S. Pacific Theater armed forces slang for "mentally unhinged after too much time on one island." The rock-scissors-paper game is attested by that name from 1976; from 1968 as paper-stone-scissors. A 1967 source says it is based on Japanese Jan Ken Pon (or Janken for short), which is said to mean the same thing more or less.
rock
v.1
"to sway," late Old English roccian "move a child gently to and fro," related to Old Norse rykkja "to pull, tear, move," Swedish rycka "to pull, pluck," Middle Dutch rucken, Old High German rucchan, German rücken "to move jerkily."
Meaning "cause to sway back and forth" is from late 13c. Intransitive sense from late 14c. For popular music senses, see rock (v.2). Related: Rocked; rocking. To rock the boat in the figurative sense "stir up trouble" is from 1914. Rock-a-bye first recorded 1805 in nursery rhyme.
rock
v.2
"to dance to popular music with a strong beat," 1948 (first attested in song title "We're gonna rock"), from rock (v.1), in earlier blues slang sense of "to cause to move with musical rhythm" (1922); often used at first with sexual overtones (cf. 1922 song title "My Man Rocks Me (with One Steady Roll)"). Sense developed early 1950s to "play or dance to rock and roll music." Related: Rocked; rocking. Rocksteady, Jamaican pop music style (precursor of reggae), is attested from 1969.
rock
n.2
"action of rocking; a movement to and fro," 1823, from rock (v.1). As short for rock and roll, by 1957; but sense of "musical rhythm characterized by a strong beat" is from 1946, in blues slang. Rock star attested by 1966.
A relatively hard, naturally occurring mineral material. Rock can consist of a single mineral or of several minerals that are either tightly compacted or held together by a cementlike mineral matrix. The three main types of rock are igneous, sedimentary, and metamorphic.
