JMdict droid

Search for English definition of Japanese words using kanji, kana or rōmaji. Search for Japanese words from their English definition.
Basic wildcards are supported, to search for incomplete words, words ending with a specific kanji, etc.

JMdict data is not included in the APK. It must be downloaded (or loaded from a file) from the application first.
Afterwards, the application is completely standalone and can be used offline.

JMdict is provided by Electronic Dictionaries Research Group. See https://www.edrdg.org/