/drʌɡ/
[noun] A substance used as medicine to treat illness or pain, or a substance that affects the mind and body in a powerful way, often taken illegally.
The word 'drug' may come from a Dutch word for 'dry goods' — meaning medicines were once simply things you dried and stored.
The word 'drug' arrives in English in the 14th century from Old French 'drogue', meaning a dry substance used in medicine or a commodity sold by an apothecary. That Old French word is itself borrowed from Middle Dutch 'droge', which meant 'dry' or 'dried goods'. The connection makes perfect sense when you picture a medieval marketplace: medicines were largely dried herbs, roots, and plant matter, bundled and stored in sacks. A 'drogue' was simply something dry — a commodity of the dry-goods trade. The Dutch word 'droge' traces back even further to Proto-Germanic 'draugaz', meaning dry, which is also the ancestor of the English word 'dry' itself. So in a roundabout way, 'drug' and 'dry' are distant cousins, both descending from the same ancient Germanic root about the absence of moisture.
When 'drug' first appeared in English texts around the 1300s and 1400s, it referred broadly to any ingredient used in medicine, alchemy, or dyeing — the chemical trades of the day. There was nothing sinister about it. An apothecary who sold 'drugs' was simply a shopkeeper dealing in medicinal ingredients, much as we might visit a pharmacy today. The word carried no particular moral weight; it was a commercial and practical term for the raw materials of healing.
Over the following centuries, the meaning began to broaden. By the 1600s, 'drug' had come to refer not just to raw ingredients but to prepared medicines as well. The term 'druggist' emerged to describe someone who sold these preparations, and 'drugstore' eventually followed in American English. The word was entirely respectable — physicians prescribed drugs, pharmacists compounded them, and patients took them without any sense of shame or danger. The expression 'drug on the market', meaning something so overabundant it has lost its value, appears in this era too, showing how 'drug' once overlapped with the idea of ordinary traded goods.
The darker association of 'drug' with mind-altering or addictive substances developed gradually, gaining real momentum in the 19th century as opium addiction became a visible social problem in both Europe and America. Substances like laudanum — a tincture of opium — were widely sold and freely used, but their destructive effects were becoming impossible to ignore. As the language began to separate 'medicine' (helpful, prescribed) from 'drug' (potentially dangerous, habit-forming), the word started to accumulate its shadow. By the 20th century, particularly after the rise of anti-narcotics laws in the United States in the 1910s and 1920s, 'drug' had firmly split into two tracks: the clinical sense used in medical and pharmaceutical contexts, and the colloquial sense pointing to illicit or recreational substances.
What makes the history of 'drug' so fascinating is how much moral weight has been loaded onto such a humble, practical word. A term that began by describing a sack of dried herbs in a medieval Dutch market has become one of the most politically and emotionally charged words in modern English. The border between 'medicine' and 'drug' — between healing and harming, between prescribed and forbidden — turns out to be a border that society draws and redraws in every generation, and the word itself carries all that tension within it.