Tickle (verb)

1. To touch or stroke lightly with fingers or a feather, causing a tingling or itching sensation.
2. To cause amusement or pleasure by provoking laughter or a pleasant sensation.
3. To excite or provoke a feeling.

Origin:

Middle english tikelen, frequentative of tikken, perhaps of low german origin.

Examples:

1. The baby giggled when I tickled her feet.
2. The comedian's jokes tickled the audience's funny bone.
3. The smell of the sea air tickled his senses.
4. The idea of starting her own business tickled her ambition.
5. The thought of a vacation in Hawaii tickled their fancy.