A written application or petition submitted to an institution (e.g., a school or company).
大学の入学願書を郵送で提出した。
I mailed my university application form.
願書の締め切りは来週の金曜日だ。
The application deadline is next Friday.
願書には必要事項を正確に書くことが大切だ。
It's important to fill out the application form accurately.
A written prayer or petition offered at a Shinto shrine or Buddhist temple.
初詣で願書に合格祈願を書いて奉納した。
At the New Year shrine visit, I wrote my wish for success on a prayer slip and offered it.
寺に古い願書が保管されていることが分かった。
It turned out that old prayer petitions were kept at the temple.
参拝者が願書に名前と願い事を書いた。
Worshippers wrote their names and wishes on the prayer slips.