Addiction - A condition that occurs when a person needs to take drugs to survive from day to day; also called dependence.
Cold turkey - Term used to describe the physical withdrawal symptoms experienced when suddenly coming off a drug; commonly used in connection with heroin withdrawal.
Comedown - How a person feels as the effects of a drug wear off.
Cut - Term used when dealers mix or "water down" drugs with other substances, for example, sugars like glucose and lactose.
Dance drugs - Stimulant drugs, such as ecstasy, that are commonly taken at clubs and raves.
Depressant - A drug that dulls the central nervous system, slowing down heart and breathing rates and making the user feel relaxed and drowsy.
Detoxification - The process of coming off a drug and getting it out of the body.
Flashbacks - A side effect of taking an hallucinogen whereby the hallucinations that occurred during a trip are relived some time later.
Hallucinogen - A drug that affects the brain and causes the user to "hallucinate", i.e. see, hear and feel things that aren't there.
Hit - The first dizzying sensation when a drug reaches the brain, common with the first cigarette or the first alcoholic drink.
Joint - A hand-rolled cigarette containing tobacco and cannabis; also referred to as a spliff.
Munchies - The hunger pangs that are experienced after smoking cannabis.
Narcotic - Drug that causes sleepiness, dizziness, numbness and possibly unconsciousness.
Opiate - A drug that dulls sensations and causes sleepiness. A natural opiate is opium, prepared from the opium poppy.
Over-the-counter - A drug that can be bought in a chemist without a prescription.
Psychoactive - Term used to describe the action of a drug that affects mood, perception and behaviour.
Rush - The first feeling of nervousness and anxiety from taking a stimulant.
Sedative - A drug that affects the brain, slowing down bodily functions and inducing sleep.
Serotonin - A chemical found in the brain that regulates mood.
Set - The mood a person is in when taking a drug.
Setting - Where a person is and who they are with when taking a drug.
Sledging - A life-threatening condition brought on by certain drugs or cocktails of drugs whereby the user is unable to move or talk, and may fall into a coma and die.
Snort - When a drug is lined up and then sniffed up through a nostril via a tube or rolled banknote.
Speedball - The practice of mixing heroin and cocaine, with potentially very dangerous side effects.
Spiked - When food or drink has had a drug added to it without the knowledge of the user.
Stimulant - A drug that affects the central nervous system, increasing heart-rate and blood pressure and making the user feel pumped up and energetic, and act loud. These drugs are also known as uppers.
"Street" name - Colloquial name for a drug.
Trip - The experience undergone under the influence of an hallucinogenic drug such as acid - sensations are intensified and perceptions altered. A trip can be "good" or "bad".
Withdrawal - The unpleasant symptoms a person experiences when they stop using a drug they're dependent on.
Works - Term used to describe the equipment needed to inject drugs.
Wrap - A carefully folded piece of paper that contains drugs like heroin, cocaine or amphetamine; also called a bag or deal.