The definition of gizmo is slang for a gadget, especially an unnecessary one or one whose user can't remember its name.(noun)
An overly fancy corkscrew opener that does way more than you would ever need it to do is an example of a gizmo.
See gizmo in Webster's New World College Dictionary
noun pl. gizmos
Origin: < ? Sp gisma, obs. or dial. var. of chisme, trifle, jigger, ult. < L cimex, a bug
See gizmo in American Heritage Dictionary 4
also gis·monoun pl. giz·mos also gis·mos
Origin: Origin unknown.
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