deb
noun
1
a debutante US, 1920.
2
a girl associated with a youth gang, either directly as a member or through a boyfriend. A lovely if ironic borrowing from 'debutante' US, 1946.
3
a depressant, sedative or tranquillizer tablet. From a slovenly pronunciation of 'deps' (depressants); also recorded in the plural US, 1975.
4
a tablet or capsule of amphetamine. A reversal of the chemical effect in the earlier usage; also noted as a plural UK, 2003.
5
a tablet of MDMA, the recreational drug best known as ecstasy UK, 2003