1. A device that automatically switches an electric lamp off and on, as in a commercial display sign.
2. slang one who engages in indecent exposure; an exhibitionist.

1. anything that flashes, especially a device that switches a light on and off.
2. A person who exposes their genitals or female nipples.

1. one who, or that which, flashes.
2. A man of more appearance of wit than reality.
3.
4. A large sparoid fish of the atlantic coast and all tropical seas (Lobotes Surinamensis).
5. the european red-backed shrike (lanius collurio); -- called also flusher.
6. an exhibitionist{1}, especially a male, who briefly exposes his private parts in a public place.

1. one who or that which flashes.
2. specifically one who makes a show of more wit than he possesses.
3. A hot boiler into which water is injected in small quantities and flashed into steam by the heat.
4. A rower.
5. in ichth, an acanthopterygian fish, the tripletail, Lobotes surinamensis, of the family Lobotidæ (which see); any lobotid.
6. same as flusher.
7. A device for automatically lighting and extinguishing incandescent lamps or groups of lamps: used especially in the operation of electric advertising-signs.

1. an electrical device that automatically turns a lamp on and off (as for an advertising display)
2. someone with a compulsive desire to expose the genitals
3. a light that flashes on and off; used as a signal or to send messages