doping

Concise Oxford English Dictionary © 2008 Oxford University Press:
dope/dəʊp/

▶noun

• 1 informal an illegal drug, especially cannabis or (US) heroin.

  ■ a drug used to enhance the performance of an athlete, racehorse, or greyhound.

• 2 informal a stupid person.

• 3 informal information.

• 4 a varnish formerly used to strengthen the fabric surface of aircraft.

• 5 a lubricant.

▶verb

• 1 administer dope to (a racehorse, greyhound, or athlete).

  ■ (be doped up) informal be heavily under the influence of drugs.

• 2 cover with varnish or other thick liquid.

• 3 Electronics add an impurity to (a semiconductor) to produce a desired electrical characteristic.

• 4 (dope something out) informal, dated work something out.

▶adjective black slang very good.

– derivatives
doper noun.

– origin C19 (in the sense ‘thick liquid’): from Du. doop ‘sauce’, from doopen ‘to dip, mix’.