Refers to a child of one's parent's first cousin. The kana form ふたいとこ is the normal modern spelling; kanji forms are rare and specify gender combinations.
See also: またいとこ
He is my second cousin.
In some countries, second cousins can marry each other.
Kanji spelling for male second cousins; rarely used in practice.
Kanji spelling for female second cousins; rarely used in practice.
Kanji spelling for mixed-gender second cousins; rarely used in practice.
Kanji spelling for mixed-gender second cousins; rarely used in practice.
Compound of 二 (ふた, 'two') and いとこ ('cousin'), literally 'two-step cousin'. The kanji spellings use 従 (じゅう) meaning 'cousin' combined with gender-specific characters.