wander (http://definr.com/wander)

     v 1: move about aimlessly or without any destination, often in
          search of food or employment; "The gypsies roamed the
          woods"; "roving vagabonds"; "the wandering Jew"; "The
          cattle roam across the prairie"; "the laborers drift
          from one town to the next" [syn: swan, stray, tramp,
           roam, cast, ramble, rove, range, drift, vagabond]
     2: be sexually unfaithful to one's partner in marriage; "She
        cheats on her husband"; "Might her husband be wandering?"
        [syn: cheat on, cheat, cuckold, betray]
     3: go via an indirect route or at no set pace; "After dinner,
        we wandered into town"
     4: to move or cause to move in a sinuous, spiral, or circular
        course; "the river winds through the hills"; "the path
        meanders through the vineyards"; "sometimes, the gout
        wanders through the entire body" [syn: weave, wind, thread,
     5: lose clarity or turn aside esp. from the main subject of
        attention or course of argument in writing, thinking, or
        speaking; "She always digresses when telling a story";
        "her mind wanders"; "Don't digress when you give a
        lecture" [syn: digress, stray, divagate]