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
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).