thirty n.2
1. (US black) one month, i.e. 30 days.
 | N.Y. Amsterdam Star-News 3 July 16: It is the 25th black of the first 30. | |
![[US]](/static/img/flags/us.png "United States") | Orig. Hbk of Harlem Jive 123: Six thirties after have flown. |
2. (N.Z. prison) a 30mg tablet of morphine sulphate.
![[NZ]](/static/img/flags/nz.png "New Zealand") | Boobslang [U. Canterbury D.Phil. thesis] 188/2: thirty n. a 30mg morphine sulphate tablet . |
3. (US black gang) a gun with an extended magazine, holding 30 bullets.
| ‘Dispatches from the Rap Wars’ in chicagomag.com 🌐 thirty A gun with an extended 30-round magazine. |
In phrases
(US black) January.
| Orig. Hbk of Harlem Jive 109: Well, Home, this is the first 30 of the new double six. |
In compounds
(N.Z. prison) a socially unacceptable individual.
| Boobslang [U. Canterbury D.Phil. thesis] 188/2: thirty-center n. a person deemed unworthy to converse with, substandard in terms of character and behaviour. |
(N.Z. prison) marijuana oil.
| Boobslang [U. Canterbury D.Phil. thesis] 188/2: thirty-forty (also 30/40) n. marijuana oil. |