noun
guardians; parents
Refers to parents or guardians, especially in school contexts such as 父兄会 (parent-teacher association).
父兄会で学校の新しい方針について話し合った。
We discussed the school's new policy at the parent-teacher meeting.
noun
father and older brother
Literal meaning of the kanji; rarely used in modern Japanese outside historical or literary contexts.
古文では「父兄」が文字通り父と兄を指すことがある。
In classical texts, 父兄 can literally refer to a father and an older brother.