memo

/ˈmɛməʊ̯/noun

A brief written message, especially one sent between people in an office.

Example sentence

“The manager sent out a memo announcing the new working hours.”

Short for 'memorandum'. Saying someone 'didn't get the memo' jokes that they missed what everyone else knows.

Related words

minutesThe written record of what was said and decided at a meeting.photocopierA machine that makes copies of documents by photographing them through a glass plate and printing the duplicates.proposalA plan or suggestion put forward for others to consider or approve.printerA machine, typically connected to a computer, that puts text or pictures onto paper; also a similar device that builds three-dimensional objects.strategyA carefully thought-out plan for reaching a particular goal.staplerA small tool that fastens sheets of paper together by pushing a bent metal staple through them.