important person, influential person, personage - a person whose actions and opinions strongly influence the course of events

chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

fixative - a compound (such as ethanol or formaldehyde) that fixes tissues and cells for microscopic study

hypo, sodium thiosulfate, sodium thiosulphate - a compound used as a fixing agent in photographic developing

auto-mechanic, automobile mechanic, car-mechanic, grease monkey, mechanic - someone whose occupation is repairing and maintaining automobiles

handyman, odd-job man, jack of all trades - a man skilled in various odd jobs and other small tasks

mender, tinker, tinkerer - a traveling repairman who mends broken things (such as metal household utensils)

skilled worker, trained worker - a worker who has acquired special skills

trouble shooter, troubleshooter - a worker whose job is to locate and fix sources of trouble (especially in mechanical devices)

narcotic - a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction