The brother of the spouse of one's sibling.
The brother of one's spouse.
The husband of the sibling of one's spouse.
The husband of one's sibling.
A person who shares a parent; one's brother or sister who one shares a parent with.
A node in a data structure that shares its parent with another node.
The most closely related species, or one of several most closely related species when none can be determined to be more closely related.