drachm
/dram
/(abbreviation dr.)
noun
1A unit of weight formerly used by apothecaries, equivalent to 60 grains or one eighth of an ounce.
1.1 (also fluid drachm) A liquid measure formerly used by apothecaries, equivalent to 60 minims or one eighth of a fluid ounce.He requested Garrett to send over a ‘drachm’ of strychnine.
Origin
Late Middle English (denoting the ancient Greek drachma): from Old French dragme or late Latin dragma, via Latin from Greek drakhmē (see drachma).