noun which may take the genitive case particle 'no'
radiant; shining brightly
Describes something that shines or glows brilliantly, often used figuratively for beauty, joy, or excellence. Functions as a no-adjective modifying a noun.
彼女は輝くばかりの笑顔で迎えてくれた。
She greeted me with a radiant smile.
輝くばかりの新緑が目にまぶしい。
The brilliant fresh green leaves are dazzling to the eyes.