かいえん 開園 LinksSentence search for 開園Sentence search for かいえんKanji details for 開 and 園Edit in JMdict Noun, Suru verb, Transitive verb, Intransitive verb1. opening of a park (theme park, botanical garden etc.)Antonym: 閉園, used in ref. to places ending in 園 Discussions Log in to talk about this word.