| a child of a first cousin of one's parent. Compare cousin (def. 1). |

| second cousin n.
|
second cousin
Something that is related or similar but not quite the same, as in This beef stew is second cousin to boeuf bourguignon. This expression transfers the literal sense of second cousin
that is, the child of the first cousin of one's mother or father
a usage dating from the mid-1600s.