Source : Webster's Revised Unabridged Dictionary (1913)

Gimcrack \Gim"crack`\, n. [OE., a spruce and pert pretender,
   also, a spruce girl, prob. fr. gim + crack lad, boaster.]
   A trivial mechanism; a device; a toy; a pretty thing.
   --Arbuthnot.

Source : WordNet®

gimcrack
     adj : tastelessly showy; "a flash car"; "a flashy ring"; "garish
           colors"; "a gaudy costume"; "loud sport shirts"; "a
           meretricious yet stylish book"; "tawdry ornaments"
           [syn: {brassy}, {cheap}, {flash}, {flashy}, {garish}, {gaudy},
            {loud}, {meretricious}, {tacky}, {tatty}, {tawdry}, {trashy}]