The meaning of leak is to enter or escape through an opening usually by a fault or mistake. How to use leak in a sentence. Present participle of leak 2.

Learn more. A leak involves the release of something. It can be a behind-someoneÒ€ℒs-back leak of sensitive information, a leak from a milk carton, or a leak in the roof that lets rain water drip in. As a verb, leak Ò€¦