Definition of "clicker"

(slang, Northeastern US) The remote-control device used to change settings on a television set, VCR, or other electronic equipment.

An electronic device used by individual students in the classroom to respond to multiple-choice questions, etc.  examples

A person who cuts out the uppers of shoes from pieces of leather using a flexible knife that clicks as it changes direction.  examples

A machine that cuts materials using a steel rule die. The name comes from the sound (click) when the material is cut. May be hand, pneumatic, or hydraulic powered.  examples

A signalling device used by military forces. Pressed between thumb and fingers, it makes a small but distinctive click understood by other members of a unit.  examples

A small mechanical device that produces a clicking sound, used in dog training.  examples

Someone who clicks, for example using a computer mouse.  examples

(UK, obsolete) Someone who stands by a shop door to invite people to buy; a tout.  quotations

(printing, obsolete) One who has charge of the work of a companionship.

(printing, historical) An employee who locks the type in the form to make it ready for printing.