A small particle of glowing matter, either molten or on fire, resulting from an electrical surge or excessive heat created by friction.

A short or small burst of electrical discharge.

A small, shining body, or transient light; a sparkle.

(figurative) A small amount of something, such as an idea or romantic affection, that has the potential to become something greater, just as a spark can start a fire.

Any of various lycaenid butterflies of the Indomalayan genus Sinthusa.

(in plural sparks but treated as a singular) A ship's radio operator.

(UK, slang) An electrician.

(cellular automata) A small collection of cells which briefly appears at the edge of a larger pattern before dying off.

A gallant; a foppish young man.

A beau, lover.

(transitive, figurative) To trigger, kindle into activity (an argument, etc).

(transitive) To light; to kindle.

(transitive, of a gun) To shoot; to fire

(intransitive) To give off a spark or sparks.