grope

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To reach about uncertainly; feel one's way.
• intransitive verb To search blindly or uncertainly.
• intransitive verb To make (one's way) by reaching about uncertainly.
• intransitive verb Slang To handle or fondle for sexual pleasure.
• noun The act or an instance of groping.

from The Century Dictionary.

• To seize or touch with or as if with the hands; grasp in any way; feel; perceive.
• To search out by the sense of touch alone; find or ascertain by feeling about with the hands, as in the dark or when blind.
• To use the hands; handle.
• To feel about with the hands in search of something, as in the dark or as a blind person; feel one's way in darkness or obscurity; hence, to attempt anything blindly or tentatively.
• Specifically To feel for fish under the bank of a brook. I. Walton. See gropple.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb obsolete To feel with or use the hands; to handle.
• intransitive verb 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.
• transitive verb To search out by feeling in the dark.
• transitive verb obsolete To examine; to test; to sound.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb obsolete To feel with or use the hands; to handle.
• verb 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.
• verb To touch (another person) closely and (especially) sexually
• verb obsolete To examine; to test; to sound.
• noun informal An act of groping, especially sexually.
• noun obsolete an iron fitting of a medieval cart wheel

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the act of groping; and instance of groping
• verb fondle for sexual pleasure
• verb search blindly or uncertainly
• verb feel about uncertainly or blindly