vellicate

verb

1. touch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements

   verb.perception

   Synonyms tickle titillate

   Source: WordNet 3.0

2. irritate as if by a nip, pinch, or tear

   verb.change

   Examples

   Smooth surfaces can vellicate the teeth.

   Synonyms pinch

   Source: WordNet 3.0

3. To twitch; to cause to twitch convulsively.

   verb

   Source: webster1913

4. To move spasmodically; to twitch; as, a nerve <i>vellicates</i>.

   verb

   Source: webster1913