drachm

noun

1.
a unit of apothecary weight equal to an eighth of an ounce or to 60 grains
drachma dram
2.
a British imperial capacity measure (liquid or dry) equal to 60 minims or 3.5516 cubic centimeters
fluid drachm fluid dram fluidram
3.
a unit of capacity or volume in the apothecary system equal to one eighth of a fluid ounce
fluid drachm fluid dram fluidram