Green’s Dictionary of Slang

dove n.

(drugs)

1. a variety of MDMA [usu. has a picture of a dove on the pill].

[UK]N. Barlay Curvy Lovebox 187: Got some killer Doves.
[UK]N. Griffiths Grits 440: Twenty-faw hours nearly since a ate tha larst Dove.
[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] : dove n. an Ecstasy tablet of very high quality.

2. a $35 piece of crack cocaine.

[US]ONDCP Street Terms 8: Dove — $35 piece of crack.

In phrases

(v.) [‘A dove tattooed on each side of an inmate's neck, near the throat, is a characteristic prison tattoo dating from the 1960s’ Looser (2001)]

(N.Z. prison) .

[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 61/2: have doves on one’s neck v. to be an old, experienced prison inmate, to have served a prison sentence a long time ago.