The Collaborative International Dictionary of English v.0.48:

Accost \Ac*cost"\, v. i.
   To adjoin; to lie alongside. [Obs.] "The shores which to the
   sea accost." --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Accost \Ac*cost"\, n.
   Address; greeting. [R.] --J. Morley.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Accost \Ac*cost"\ (#; 115), v. t. [imp. & p. p. Accosted; p.
   pr. & vb. n. Accosting.] [F. accoster, LL. accostare to
   bring side by side; L. ad + costa rib, side. See Coast, and
   cf. Accoast.]
   1. To join side to side; to border; hence, to sail along the
      coast or side of. [Obs.] "So much [of Lapland] as accosts
      the sea." --Fuller.
      [1913 Webster]

   2. To approach; to make up to. [Archaic] --Shak.
      [1913 Webster]

   3. To speak to first; to address; to greet. "Him, Satan thus
      accosts." --Milton.
      [1913 Webster]

WordNet (r) 3.0 (2006):

accost
    v 1: speak to someone [syn: address, accost, come up to]
    2: approach with an offer of sexual favors; "he was solicited by
       a prostitute"; "The young man was caught soliciting in the
       park" [syn: hook, solicit, accost]