noun
informal crest; substitute crest
A family crest used in less formal settings, as opposed to the formal 表紋 (おもてもん). Often simpler in design.
この着物には裏紋がついている。
This kimono has an informal crest on it.
裏紋は表紋より簡略化されていることが多い。
The informal crest is often more simplified than the formal crest.