The kanji 掲 generally conveys the meaning of "to post," "to display," "to put up," or "to hang up." It implies the act of making something visible or public, often by displaying it in a noticeable location. This can range from posting notices to displaying items for sale or exhibiting something for others to see.

・On-yomi (音読み): ケイ (kei) ・Kun-yomi (訓読み): かか（げる） (kaka(geru))

⚫︎掲示板 Translation: Bulletin board ⚫︎掲げる Translation: To display; to hoist; to raise ⚫︎掲載 Translation: Publication; posting (e.g., of an article)

The kanji 掲 is a phono-semantic compound. The left side is the radical 扌 (てへん, tehen), representing "hand" or "action." The right side is 曷 (katsu), which acts as a phonetic component, lending the sound "kei" (ケイ). So, the character originally depicted the action of using one's hand to lift or raise something, like posting a notice or displaying an item, which then developed into the general meaning of "to post" or "to display."