noun, noun which may take the genitive case particle 'no', noun or participle which takes 'suru', intransitive verb
spur-of-the-moment participation; last-minute entry; walk-in
Refers to joining an event, performance, or competition without prior registration or planning. Often used as a noun with する to mean 'to join on the spot' or as a modifier like 飛び入りの参加者.
カラオケ大会に飛び入りで参加した。
I joined the karaoke contest on the spur of the moment.
飛び入りのゲスト
A last-minute guest went up on stage.
noun
specking on flower petals
Rare, specialized term in horticulture or botany referring to small spots or specks on petals. Not commonly used in everyday language.
この花の飛び入りは品種の特徴です。
The specking on this flower's petals is a characteristic of the variety.