(informal) An act of groping, especially sexually.

To search or attempt to find something in the dark, or, as a blind person, by feeling; to move about hesitatingly, as in darkness or obscurity; to feel one's way, as with the hands, when one can not see.

To touch (another person) closely and (especially) sexually.

To intentionally and inappropriately touch or rub against another person, in such a manner as to make the contact appear accidental, for the purpose of one's sexual gratification.