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1.
The relationship you share between your family. Almost the same thing as friendship but much closer.
Since Quinn and Olivia are related they not only have a friendship, but a familyship.
by roburnsinerney July 20, 2011
 
2.
The bond, between two or more family member's.
"I swear on our 'Familyship'". Another words, I am telling the truth.
by Kc&Emma February 05, 2011