east and west
noun
1
complementary doses of MDMA, the recreational drug best known as ecstasy, and amphetamine, both in powder form, inhaled via different nostrils. 'East' is signified by E (MDMA), 'west' extends from an initialism of WHIZZ (amphetamine) UK, 1996.
2
the female breast. Or simply 'east west' UK, 2001.
3
the breast or the chest, hence the upper body. Rhyming slang UK, 1923.
4
a vest. Rhyming slang; in pickpocket usage US, 1949