The Collaborative International Dictionary of English v.0.48:

Street \Street\ (str[=e]t), n. [OE. strete, AS. str[=ae]t, fr.
   L. strata (sc. via) a paved way, properly fem. p. p. of
   sternere, stratum, to spread; akin to E. strew. See Strew,
   and cf. Stratum, Stray, v. & a.]
   1. Originally, a paved way or road; a public highway; now
      commonly, a thoroughfare in a city or village, bordered by
      dwellings or business houses.
      [1913 Webster]

            He removed [the body of] Amasa from the street unto
            the field.                            --Coverdale.
      [1913 Webster]

            At home or through the high street passing.
                                                  --Milton.
      [1913 Webster]

   Note: In an extended sense, street designates besides the
         roadway, the walks, houses, shops, etc., which border
         the thoroughfare.
         [1913 Webster]

               His deserted mansion in Duke Street. --Macaulay.
         [1913 Webster]

   2. the roadway of a street[1], as distinguished from the
      sidewalk; as, children playing in the street.
      [PJC]

   3. the inhabitants of a particular street; as, the whole
      street knew about their impending divorce.
      [PJC]

   The street (Broker's Cant), that thoroughfare of a city
      where the leading bankers and brokers do business; also,
      figuratively, those who do business there; as, the street
      would not take the bonds.

   on the street,
      (a) homeless.
      (b) unemployed.
      (a) not in prison, or released from prison; the murderer
          is still on the street.

   Street Arab, Street broker, etc. See under Arab,
      Broker, etc.

   Street door, a door which opens upon a street, or is
      nearest the street.

   street person, a homeless person; a vagrant.
      [1913 Webster +PJC]

   Syn: See Way.
        [1913 Webster]

WordNet (r) 3.0 (2006):

street person
    n 1: someone who sleeps in any convenient place [syn: dosser,
         street person]