Definition from Wiktionary, the free dictionary
- A child of a parent's sibling. A nephew or niece of a parent.
- A person who shares common grandparents but not common parents.
- Starting with two first cousins (two persons with a common grandparent), the relationship between one of those persons and the offspring of the other is first cousin once removed.
- The relationship between one of those persons and the grandchild of the other is first cousin twice removed.
cousin — see cousin