Source : Webster's Revised Unabridged Dictionary (1913)

Loiter \Loi"ter\, v. i. [imp. & p. p. {Loitered}; p. pr. & vb.
   n. {Loitering}.] [D. leuteren to delay, loiter; cf; Prov. G.
   lottern to be louse, lotter louse, slack, unsettled, vagrant,
   OHG. lotar.]
   1. To be slow in moving; to delay; to linger; to be dilatory;
      to spend time idly; to saunter; to lag behind.

            Sir John, you loiter here too long.   --Shak.

            If we have loitered, let us quicken our pace.
                                                  --Rogers.

   2. To wander as an idle vagrant. [Obs.] --Spenser.

   Syn: To linger; delay; lag; saunter; tarry.

Source : WordNet®

loiter
     v : be about; "The high school students like to loiter in the
         Central Square"; "Who is this man that is hanging around
         the department?" [syn: {lounge}, {footle}, {lollygag}, {loaf},
          {lallygag}, {hang around}, {mess about}, {tarry}, {linger},
          {lurk}, {mill about}, {mill around}]