1. in monetary senses.
(a) [mid-19C+] (US) one dollar; thus half a rock, 50 cents.
(b) [1990s+] (US prison) one carton of prison cigarettes, the equivalent of $1 in a barter economy.
2. [20C+] a diamond, thus bum rock, a flawed stone.
3. [20C+] a man who is sturdy and solid both emotionally, physically and in his character.
4. in drug uses.
(a) [1920s] opium.
(b) [1940s–50s] a piece of hashish.
(c) [1960s+] cocaine, when in uncrushed form.
(d) [1980s+] (also rock cocaine, rock crack) crack cocaine; a piece of crack cocaine.
(e) [1990s+] heroin, prior to being crushed to powder.
(f) [2000s] methamphetamine, when in uncrushed form.
5. (US Und.) a prison.
6. [1950s] (US teen) a large, tough person.
7. [1960s+] (US prison) a cellblock.
8. [1970s+] (S.Afr.) an Afrikaner. [abbr. rock spider n.].
9. [1980s+] (US black) a basketball.
10. [1990s+] (US) in fig. use, the essence, the ‘bottom line’.
11. [2010s] a piece of excrement, an individual stool.
[1980s+] (drugs) a desire for crack cocaine.
see sense 4d above.
[1980s+] (drugs) methamphetamine.
[2000s] (US drugs) a habitual user of crack cocaine.
[1990s+] (drugs) a consumer of crack cocaine.
[2000s] (US black) a woman who takes crack cocaine; thus a general derog.
[1980s+] (drugs) a place where crack cocaine is sold and smoked; also attrib.
[1990s+] (UK black/drugs) a smoker of crack cocaine.
[1980s] (Aus.) a $20 bill.
[1980s] (US drugs/campus) an addict who is desperate for a dose of rock or crack cocaine; one who may steal to support their habit.
see pipe n.1 (3g)
[1980s+] (drugs) a smoker of crack cocaine, esp. a woman who trades sex for crack cocaine or money to buy crack cocaine.
[2000s] (US drugs) to smoke crack cocaine.
[1990s+] (US black) sporting diamond jewellery.
[1980s+] (drugs) to collapse through an excessive consumption of marijuana or pills.
[late 19C] (US) to send someone out with a container to have it filled with beer at the local bar or tavern.
SE in slang uses
Pertaining to prison
[1980s+] (N.Z.) a prison.
1. [20C+] (US) in prison uses [hard labour in the rock quarry].
(a) a convict.
(b) a prison.
2. as a form of machine.
(a) [1920s] (US) an automobile.
(b) [1930s] (orig. US black) an accordion.
see separate entries.
[1960s] (US) a prison.
see under ape n.
[1920s–40s] (US tramp/black) diamonds.
[1940s+] (Aus.) a derog. term for a Roman Catholic.
[1920s+] (US) a stupid person; thus rock-headed adj., very stupid.
1. a geologist.
2. an amateur mineralogist.
see separate entry.
[1940s] (US Und.) a seller of cheap jewellery.
see off one’s rocker under rocker n.1
see separate entry.