From Longman Dictionary of Contemporary Englishnote something ↔ down phrasal verb formalto write something down so that you will remember it Note down the main points you want to include in your essay. → note→ See Verb table
Examples from the Corpus
note down• The yield was 101 basis points more than the 10 - year Treasury note, down 3 basis points from yesterday.• The yield was 106 basis points above the 10 - year Treasury note, down 4 basis points from yesterday.• Examiners were then chosen to scrutinize the sealed votes and note them down.• If you will need to relate what some one said or did take time beforehand to remember it clearly and note it down.• Has a characteristic song, with a series of cooing or bubbling notes that run down and then up the scale. 