Definition of "spiffy"

He was “great” (as he expressed it) with the Bloomer who kept the bar where their club was held, and whom he styled “a spiffy girl,” and who had been graciously please to accept of a pair of very Brummagem-looking earings, set with paste diamonds, with which he presented her.

1852, “How Jeremiah Tubbs became engaged in the Irish elections of 1852”, in New Monthly Magazine and Humorist, page 66

The charming twins came last week, and you should see their clothes. ‘Spiffy’ is the word.

1906 August 26, “Newport News in London”, in The New York Times, page 9