To stealthily fondle someone in a sexual manner.
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.
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.
An act of groping, especially sexually.