'kissing kin' definitions:

Definition of 'kissing kin'

(from WordNet)
noun
A more or less distant relative; familiar enough to be greeted with a kiss [syn: kissing cousin, kissing kin]

Definition of 'kissing kin'

From: GCIDE
  • 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]