wander

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

• intransitive verb To move about without a definite destination or purpose.
• intransitive verb To go by an indirect route or at no set pace; amble.
• intransitive verb To proceed in an irregular course; meander.
• intransitive verb To behave in a manner that does not conform to morality or norms.
• intransitive verb To turn the attention from one subject to another with little clarity or coherence of thought.
• intransitive verb To be directed without an object or in various directions.
• intransitive verb To wander across or through.
• intransitive verb To be directed around or over.
• noun The act or an instance of wandering.

from The Century Dictionary.

• In physical chemistry, to move hither and thither in every direction: said of the molecules of a liquid or of the molecules of two miscible liquids in contact with each other.
• To ramble with out, or as if without, any certain course or object in view; travel or move from place to place; range about; roam; rove; stroll; stray.
• To leave home or a settled place of abode; depart; migrate.
• To depart from any settled course; go astray, as from the paths of duty; stray; de viate; err.
• To lose one's way; be lost.
• To think or speak incoherently; rave; be de lirious.
• Synonyms 1-3. Roam, Rove, etc. (see ramble), straggle.
• Swerve, digress.
• To travel over without a cer tain course; stroll through; traverse.
• To lead astray; cause to lose the way or become lost.

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

• intransitive verb To ramble here and there without any certain course or with no definite object in view; to range about; to stroll; to rove.
• intransitive verb To go away; to depart; to stray off; to deviate; to go astray.
• intransitive verb To be delirious; not to be under the guidance of reason; to rave.
• transitive verb rare To travel over without a certain course; to traverse; to stroll through.

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

• verb intransitive To move without purpose; often in search of livelihood.
• verb intransitive To stray; stray from one's course; err.
• verb intransitive To commit adultery.
• verb intransitive To go somewhere indirectly or at varying speeds; to move in a curved path.
• verb intransitive Of the mind, to lose focus or clarity of argument or attention.
• noun The act or instance of wandering.

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

• verb to move or cause to move in a sinuous, spiral, or circular course
• verb move about aimlessly or without any destination, often in search of food or employment
• verb lose clarity or turn aside especially from the main subject of attention or course of argument in writing, thinking, or speaking
• verb be sexually unfaithful to one's partner in marriage
• verb go via an indirect route or at no set pace