note

noun

• 1a brief record of points or ideas written down as an aid to memory:I’ll make a note in my diary lecture notes
• a short comment on or explanation of a word or passage in a book or article; an annotation:see note iv above

• 2a short informal letter or written message:I left her a note explaining where I was going
• a short official document certifying a particular thing:you need a sick note from your doctor
• an official letter sent from the representative of one government to another: the Secretariat sent a diplomatic note to the embassy protesting about the sale of arms

• 3British a banknote:a ten-pound note
• a written promise or notice of payment of various kinds:a credit note

• 4a single tone of definite pitch made by a musical instrument or the human voice:the last notes of the symphony died away
• a written sign representing the pitch and duration of a musical note.
• a key of a piano or similar instrument:black notes
• a bird’s song or call, or a single tone in this:the tawny owl has a harsh flight note

• 5 [in singular] a particular quality or tone that reflects or expresses a mood or attitude:there was a note of scorn in her voice the decade could have ended on an optimistic note
• any of the basic components of a fragrance or flavour:the fresh note of bergamot

verb

• 1notice or pay particular attention to (something):he noted his mother’s unusual gaiety [with clause]:please note that you will not receive a reminder that final payment is due
• remark upon (something) in order to draw attention to it:we noted earlier the difficulties inherent in this strategy

• 2record (something) in writing:he noted down her address on a piece of paper