A unit of weight : 1/8 oz.; 60 gr, apothecaries' weight; 1/16 oz., avoirdupois weight. SYN: drachm. [see drachm]
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dynamic random access memory
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dram also drachm 'dram n
1) either of two units of weight:
a) an avoirdupois unit equal to 1.772 grams or 27.344 grains
b) a unit of apothecaries' weight equal to 3.888 grams or 60 grains
2) FLUID DRAM
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(3, dr) (dram) a unit of weight which, in the apothecaries' system, equals 60 grains, or
ounce; in the avoirdupois system it equals 27.34 grains, or 
ounce.
Medical dictionary. 2011.