POODLE means Padding Oracle on Downgraded Legacy Encryption. It allows an attacker to eavesdrop on encrypted HTTPS communications using the SSL 3.0 protocol.
To protect a server against POODLE attacks you can disable SSL 3.0, or TLS 1.1 and TLS 1.2.
The POODLE vulnerability was discovered by Google in 2014, reference CVE-2014-3566.
Additional information is available from https://www.makeuseof.com/what-is-the-poodle-attack/