noun, adverb, noun which may take the genitive case particle 'no'
short time; fleeting moment
Archaic word for a very brief moment; often used poetically. In modern Japanese, 一瞬 or 束の間 are more common.
玉響の夢を見た。
I had a fleeting dream.
その幸せは玉響に過ぎなかった。
That happiness was but a fleeting moment.
The exact derivation is uncertain; the kanji 玉 (jewel) and 響 (echo) are conventionally associated with the meaning of a fleeting, precious moment.