kissing kin

from WordNet (r) 3.0 (2006)

kissing kin
    n 1: a more or less distant relative; familiar enough to be
         greeted with a kiss [syn: {kissing cousin}, {kissing kin}]

from The Collaborative International Dictionary of English v.0.48

kissing kin \kiss"ing kin`\
   Any relative more distant than the immediate family,
   sufficiently well acquainted to be greeted with a kiss, such
   as a {kissing cousin}.
   [PJC]