1. Noun which may take the genitive case particle 'no', Taru adjective, Adverb taking the 'to' particle

   (sound) lingering in the air; trailing notes (of a bell, etc.)

   ArchaicYojijukugo (four character compound)

Also written 余韻嫋嫋【よいんじょうじょう】yoinjoujou