Драм: Единица измерения массы и объема.

Unit of mass or volume in some measurement systems

The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; abbreviated dr) is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system.

The Attic Greek drachma (δραχμή) was a weight of 6 obols, 1/100 Greek mina, or about 4.37 grams. The Roman drachma was a weight of 1/96 Roman pounds, or about 3.41 grams. A coin weighing one drachma is known as a stater, drachm, or drachma. The Ottoman dirhem was based on the Sassanian drachm, which was itself based on the Roman dram/drachm.

The British Weights and Measures Act of 1878 introduced verification and consequent stamping of apothecary weights, making them officially recognized units of measurement. By 1900, Britain had enforced the distinction between the avoirdupois and apothecaries' versions by making the spelling different:
dram now meant only avoirdupois drams, which were 1/16 of an avoirdupois ounce. An ounce consisted of 437.5 grains, thus making the dram approximately 27.34 grains. drachm now meant only apothecaries' drachms, which were 1/8 of an apothecaries' ounce of 480 grains, thus equal to 60 grains.

In the avoirdupois system, the dram is the mass of 1/256 pound or 1/16 ounce. the dram is the mass of 1/96 pounds apothecaries (lb ap), or 1/8 ounces apothecaries (oz ap or ℥)

The line "Where'd you get your whiskey, where'd you get your dram?" appears in some versions of the traditional pre–Civil War American song "Cindy". In the Monty Python's song "The Bruces' Philosophers Song", there is the line "Hobbes was fond of his dram". In the old time music tradition of the United States, there is a tune entitled "Gie the Fiddler a Dram", "gie" being the Scots language word for "give", brought over by immigrants and commonly used by their descendants in Appalachia at the time of writing. "Little Maggie," a traditional song popular in bluegrass music, refers to the title character as having a "dram glass in her hand." In the episode "Double Indecency" of the TV series Archer, the character Cheryl/Carol was carrying around 10 drams of Vole's blood and even offered to pay for a taxi ride with it. In Frank Herbert's Dune, the Fremen employ a sophisticated measurement system that involves the drachm (and fractions thereof) to accurately count and economize water, an ultra precious resource on their home, the desert planet Arrakis.