What does accost mean?
The definition of accost
Ac*cost” (#; 115), v. t.
[imp. & p. p. Accosted; p. pr. & vb. n.Accosting.]
Etym: [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.
2 To approach; to make up to. [Archaic] Shak.
3 To speak to first; to address; to greet. “Him, Satan thus accosts.” Milton.

Ac*cost”, v. i.
To adjoin; to lie alongside. [Obs.] “The shores which to the sea accost.” Spenser.
Ac*cost”, n.
Address; greeting. [R.] J. Morley.