A colloquial verb meaning 'to take notes' or 'to jot down' (to make a brief written record of something).
重要なことはすぐにメモってください。
Please jot down anything important right away.
会議中に上司の指示をメモった。
I noted down my boss's instructions during the meeting.
電話で伝言があったのでスマホにメモっておいた。
I had a message over the phone, so I memorized it on my smartphone (jotted it down).
授業の要点は黒板を見ながらメモるといい。
It's good to take notes while looking at the blackboard for the key points of the lesson.