na-adjective, adverb, noun which may take the genitive case particle 'no'
crusty; flaky; dried out
Describes something that has become dry, hard, and crusty, often due to loss of moisture. Colloquial and onomatopoeic.
パンがかぴかぴになった。
The bread has gone crusty.
かぴかぴのご飯は食べにくい。
Dried-out rice is hard to eat.