The phrase "secret memo" refers to a confidential written message or note that contains important information meant to be kept secret, meaning it can only be known or seen by certain specific people. Full definition
In a series of secret memos sent back to Washington, described to me by several current and former US officials who have written or read them, diplomats reported that Russian intruders had broken into their homes late at night, only to rearrange the furniture or turn on all the lights and televisions, and then leave. (businessinsider.com)
The Daily Mail has published a bombshell secret memo sent by leading #ExxonKnew activist - lawyer Matt Pawa to billionaire climate activist Tom Steyer, outlining a strategy to bring state - level class action lawsuits against energy companies and charging them with causing global warming. (eidclimate.org)
President Donald Trump is currently deciding whether or not to release a controversial secret memo, compiled by Rep. Devin Nunes (R - CA), that alleges an anti-Trump conspiracy at the FBI. (vox.com)