To sell crack cocaine

popularized by the 1991 movie "new jack city"
Tyrone: "yo Jamal how you been getting money to buy all that new jewelry"?

Jamal: "I been slanging rock"
by janin ting June 12, 2009
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(v), alt: slang rocks, sling rock, sling rocks,
To sling (or slang) i.e. sell or distribute;

Rocks (or rock), crack cocaine.

To sling rock means specifically to be a crack dealer.
"What's yo trap nigga?"
"I slang rock."
"hood as fuck, my nigga."
by Uncommon Sense March 1, 2015
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A Male\Female sells drugs to other people
(in a whisper voice) "Sir.... Do you happen to slang rocks?"
by Ladiesman2177 June 24, 2009
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