A regency of Aceh special region in Indonesia.

(geology, oceanography) A kind of hydrothermal vent found on the seabed, emitting clouds of black material. / Used other than figuratively or idiomatically: see black, smoker.

(UK, education) A school accepting pupils from age 4 to 12.

(organic chemistry) Any iodo- derivative of amphetamine, but especially para-iodoamphetamine that is used as a selective serotonin releasing agent