親おや知しらず

noun

wisdom tooth

Refers to the third molar, typically emerging in late teens or early adulthood. Often used in medical or everyday contexts.

• 親おや知しらずが痛いたくて、歯は医い者しゃに行いった。

  My wisdom tooth hurt, so I went to the dentist.

• 親おや知しらずを抜ぬく手しゅ術じゅつを受うけた。

  I had surgery to remove my wisdom tooth.

noun

not knowing one's birth parents; person who does not know their birth parents

Literally 'not knowing one's parents'. Can refer to the state of being unaware of one's biological parents, or a person in that situation. Often used in discussions of adoption or orphanhood.

• 彼かれは親おや知しらずで育そだった。

  He grew up not knowing his birth parents.

• 親おや知しらずの子こ供どもたちを支し援えんする団だん体たいがある。

  There is an organization that supports children who do not know their birth parents.