An opiate, such as heroin, morphine, or opium. It doesn't mean just any super-addictive drug, like meth. Just opioids like codeine.

Too often misused by propagandists and the ignorant as a word to describe any illegal drug that you're not supposed to use. This is probably because of its scary-sounding name, like some sort of hybridization between psychotic and nark, which just sounds awful.

Don't listen to anybody who uses it that way. They have no clue what they're talking about.

Intoxicated, usually on depressants such as alcohol, opioids, or benzodiazepines.

Also known as a bathroom cabinet and is usually placed near a sink or toilet. It is designed to hold hygiene products, toiletries, and medications (hopefully goodies such as benzos, prescription amphetamines/stimulants, opiates and opioids, etc).

A synthetic "poor man's" opioid. Acting almost exclusively on the mu-type opioid receptors (1 of 4 types) it is considered milder and less addictive than most other natural and semi-synthetic opioids. Used to treat moderate pain, it is most commonly sold under the brand name Ultram.
Its recreational use is limited, due to its relatively low strength, and higher incidence of side-effects when compared to other opioids. Many opioid users refuse to buy it, and its street value usually won't break $1.
It is still an opioid nevertheless, and can produce a relaxing high at upwards of 50mg, but its lesser effect, nauseating side effects, and longer reaction time makes it undesirable for most users.