Origin of bussprobably , like German dialect, dialectal bus, Welsh and amp; Gaelic bus, kiss, lip, of echoic origin, originally
tr. & intr.v.bussed, buss·ing, buss·es
Origin of bussPossibly blend of obsolete bass (akin to French baiser) and obsolete cuss (akin to Middle English kissen, to kiss; see kiss), or from Scottish Gaelic bus, lips, mouth; see puss2.
(third-person singular simple present busses, present participle bussing, simple past and past participle bussed)
Origin uncertain; probably ultimately imitative.