noun
Urasenke school of tea ceremony
One of the main schools of Japanese tea ceremony, alongside Omotesenke and Mushanokōjisenke.
彼女は裏千家で茶道を習っている。
She is learning tea ceremony at the Urasenke school.
Omotesenke is another major tea ceremony school, founded by Sen no Rikyū's grandson, while Urasenke was founded by a later descendant.
From 裏 (ura, 'back' or 'inner') + 千家 (Senke, the Sen family name), referring to the branch of the Sen family that established this school.