promethazine
Concise Oxford English Dictionary © 2008 Oxford University Press:
promethazine /prə(ʊ)ˈmɛθəziːn/
▶noun Medicine a synthetic antihistamine drug taken chiefly for allergies and motion sickness.
– origin 1950s: from pro(pyl) + meth(yl) + (phenothi)azine.
'promethazine' also found in these Oxford entries:

