'kissing cousin' definitions:

Definition of 'kissing cousin'

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 cousin'

From: GCIDE
  • kissing cousin \kiss"ing cous"in\ A cousin sufficiently well acquainted to be greeted with a kiss; a type of kissing kin. [PJC]