buss (n.) Look up buss at Dictionary.com
"a kiss," 1560s; probably of imitative origin, as are Welsh and Gaelic bus "kiss, lip," French baiser "kiss" (12c., from Latin basiare), Spanish buz, German dialectal Buss.
buss (v.) Look up buss at Dictionary.com
1570s, from buss (n.). Related: Bussed; bussing.
Kissing and bussing differ both in this,
We busse our wantons, but our wives we kisse.

[Robert Herrick, "Hesperides," 1648]