paper patch; paper backing; sticker or label
A piece of paper attached to an object, such as a patch, backing, sticker, or handwritten label. This physical-label use overlaps with the broader idea of a paper that has been stuck on.
They covered the hole in the torn shoji with a small paper patch.
箱に「割れ物注意」と書いた貼り紙がしてある。
There is a label on the box that says "Fragile."
The most common everyday use: a paper notice put up on a wall, door, shopfront, bulletin board, etc. Often appears in 張り紙がしてある or 張り紙を出す.
入口に臨時休業の張り紙がしてあった。
There was a notice at the entrance saying the shop was temporarily closed.
掲示板の張り紙を読んで、集合時間を確認した。
I read the notice on the bulletin board and checked the meeting time.
They put up a notice reading 'Temporarily Closed' at the shop entrance.
A notice about the construction work appeared at the station.
They stuck a paper patch over the crack in the wall to hide it.
They announced the change in fees with a posted notice.
Hybrid kana-kanji form marked search-only.
No-okurigana variant marked search-only; prefer 張り紙 in ordinary writing.