1. informal. small, unimportant, unimpressive, or shabby
"The engagement ring was so dinky that I refused him."
"I can't eat just this dinky salad; I need real food!"
Origin: (from etymonline.com)
"1788 'neat, trim, dainty, small,' from Scottish dialectal dink "finely dressed, trim" (c.1500), of unknown origin. Modern sense is 1850s."