noun, noun which may take the genitive case particle 'no'
needs checking; must-see; requires verification
Used as a noun or no-adjective to label something that requires attention, verification, or is highly recommended to see. Common in casual notes, social media, and informal reminders.
This video is a must-see.
It needs checking whether there are any mistakes in the documents.
Compound of 要 (yō, 'need' or 'essential') and チェック (chekku, from English 'check'). A straightforward modern wasei-eigo formation.