drachm has definitions from the field of pharmacology
1
[ noun ] a British imperial capacity measure (liquid or dry) equal to 60 minims or 3.5516 cubic centimeters
2
[ noun ] (pharmacology) a unit of apothecary weight equal to an eighth of an ounce or to 60 grains

Synonyms

drachma dram

3
[ noun ] a unit of capacity or volume in the apothecary system equal to one eighth of a fluid ounce
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