1Permission, approval, or authorization granted by an official, institution, or person in charge — often formal (e.g., a license or official sanction).
工事を始めるには市の許可が必要だ。
You need permission from the city to start construction.
館内で写真を撮る前に係員の許可を得た。
I got permission from the staff before taking photos inside.
無許可でこの道具を使うことはできません。
You cannot use this equipment without authorization.
親の許可があれば、留学に行ってもいい。
If you have your parents' permission, you can go study abroad.