The Collaborative International Dictionary of English v.0.48:

Buss \Buss\, n. [OE. basse, fr. L. basium; cf. G. bus (Luther),
   Prov. G. busserl, dim. of bus kiss, bussen to kiss, Sw. puss
   kiss, pussa to kiss, W. & Gael. bus lip, mouth.]
   A kiss; a rude or playful kiss; a smack. --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Buss \Buss\ (b[u^]s), v. t. [imp. & p. p. Bussed (b[u^]st); p.
   pr. & vb. n. Bussing.]
   To kiss; esp. to kiss with a smack, or rudely. "Nor bussed
   the milking maid." --Tennyson.
   [1913 Webster]

         Kissing and bussing differ both in this,
         We buss our wantons, but our wives we kiss. --Herrick.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Buss \Buss\, n. [Cf. OF. busse, Pr. bus, LL. bussa, busa, G.
   b["u]se, D. buis.] (Naut.)
   A small strong vessel with two masts and two cabins; -- used
   in the herring fishery.
   [1913 Webster]

         The Dutch whalers and herring busses.    --Macaulay.
   [1913 Webster]

WordNet (r) 3.0 (2006):

buss
    n 1: the act of caressing with the lips (or an instance thereof)
         [syn: kiss, buss, osculation]
    v 1: touch with the lips or press the lips (against someone's
         mouth or other body part) as an expression of love,
         greeting, etc.; "The newly married couple kissed"; "She
         kissed her grandfather on the forehead when she entered the
         room" [syn: snog, kiss, buss, osculate]