A cousin is a relative with whom a person shares one or more common ancestors. In the general sense, cousins are two or more generations away from any common ancestor, thus distinguishing a cousin from an ancestor, descendant, sibling, aunt, uncle, niece, or nephew. However in common parlance, "cousin" normally specifically means "first cousin".
In kinship terminology, a cousin is a relative with whom a person shares one or more common ancestors (other than a parent, child, ancestor, descendant, sibling, descendant/child of a sibling, or sibling of an ancestor/parent). However in common parlance, 'cousin' normally specifically means 'first cousin'.Systems of 'degrees' and 'removals' are used in the English-speaking world to describe the exact relationship between two cousins (in the broad sense) and the ancestor they have in common.
Contributions by JackME, RossPatterson, and Ruakh.
HGTV's Cousins Undercover With Anthony Carrino and John Colaneri.