TICKLE (2)
Source: 566, 567
tickle (2). Tickle, a. wavering, tottering, unsteady, unstable
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Tic″kle, v. i. 1. 1. To feel titillation.
He with secret joy therefore Did tickle inwardly in every vein. Spenser. 2. 2. To excite the sensation of titillation. Shak.