noun
library card
A card used to borrow materials from a library.
図書館で本を借りるには貸出券が必要です。
You need a library card to borrow books from the library.
Full okurigana spelling, also common.
Mixed okurigana spelling.
Compound of 貸し出し (kashidashi, 'lending') + 券 (ken, 'ticket/card').