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1.
crack cocaine packaged for sale in a vial with a red cap

"I keep the .40 cal on my side,
steppin' wit the mindstate of a mobster
Quick to see a n**** pass by,
tuck ya chain in cuz he might rob ya.
Got glocks for sale,
Red tops for sale"

Snitch ft. Akon - Obie Trice
ayo i got dem red tops 2 for 5
by Clish May 22, 2007
 
2.
a vial of crack that is recognized by the red colored capping
Got glocks for sale, red tops for sale
by Rick Ross July 05, 2006
 
3.
Nickname of the 150 bhp C20XE Vauxhall/Opel 2.0 litre DOHC car engine, based on the fact that it had a red L-shaped spark plug cover (although some later examples had a black cover, these are still referred to as "red tops" if the cover is L-shaped).

The chav stuck a red top in his clapped-out Nova, and when the tiny brakes and crap suspension couldn't handle the power he ploughed into a coachload of Americans (killing them all, painfully) & landed upside down in a field with a smashed spine, watching the pool of petrol slowly approaching the lit cigarette hanging from the mouth of his decapitated estate slut girlfriend.
by Antiseptic August 16, 2007
 
4.
Slang for british tabliod newspapers, in particular those with red tops such as the star, the sun, ect.
The red tops are in on it, meaning the tabliods have shown enthusiasem in a story.
by sassyman23 August 19, 2009
 
5.
Nickname for mini bottles of Smirinoff vodka. Term was made famous by Sylvia from A&E's Intervention.
Sylvia: Hey there, can I get five of these little red tops?
Liquor Store Employee: Yes m'am.
by jurgis1234 January 07, 2012
 
6.
A hollow point or armour-piercing bullet.
"I keep the .40 cal on my side,
steppin' wit the mindstate of a mobster
Quick to see a n**** pass by,
tuck ya chain in cuz he might rob ya.
Got glocks for sale,
Red tops for sale"

Snitch ft. Akon - Obie Trice
by huevosplash April 27, 2006