Emily Dickinson Lexicon

TICK'LE, v.t. [dim. of touch; perhaps directly from tick, to pat, or it is the L. titillo, corrupted.]

1. To touch lightly and cause a peculiar thrilling sensation, which can not be described. A slight sensation of this kind may give pleasure, but when violent it is insufferable.
2. To please by slight gratification. A glass of wine may tickle the palate. Such a nature / Tickled with good success. Shak.