noun which may take the genitive case particle 'no', noun
Used as a no-adjective or noun to describe something of the highest quality or degree. Often appears in phrases like とびきりの品 or とびきりの笑顔.
この店のケーキはとびきりだ。
The cakes at this shop are the best.
彼女はとびきりの笑顔で迎えてくれた。
She greeted me with a brilliant smile.
noun, adverb
exceptionally; extraordinarily; by far
Adverbial use meaning 'to an exceptional degree', often modifying adjectives or verbs. Can also be used as a noun with の to modify another noun.
今日はとびきり暑い。
It's exceptionally hot today.
彼はとびきり上手な料理人だ。
He is an extraordinarily skilled chef.
noun
jumping and slashing
Original literal meaning, now rare. Refers to a leaping attack with a blade. Mostly encountered in historical or martial contexts.
古い剣術書には飛び切りという技が記されている。
Old swordsmanship manuals describe a technique called 'tobikiri' (jumping slash).