妹背 いもせ Also written 妹兄 Meanings Noun couple; husband and wife; man and wife sibling; brother and sister Kanji 妹 younger sister 背 back. Read as せ. Words containing 妹背 妹背鳥 (いもせどり) any bird of family Motacillidae (excluding the pipits) Jinuma: Japanese Dictionary · Word lists