drachm
Concise Oxford English Dictionary © 2008 Oxford University Press:
drachm /dram/
▶noun historical a unit of weight equivalent to 60 grains or one eighth of an ounce.
■ (also fluid drachm) a liquid measure equivalent to 60 minims or one eighth of a fluid ounce.
– origin ME (denoting the ancient Greek drachma): from OFr. dragme or late L. dragma.
'drachm' also found in these Oxford entries:

