note

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A brief record, especially one written down to aid the memory.
• noun A comment or explanation, as on a passage in a text.
• noun A brief informal letter: synonym: letter.
• noun A formal written diplomatic or official communication.
• noun A piece of paper currency.
• noun A debt security, usually with a maturity of ten years or less.
• noun A promissory note.
• noun A tone of definite pitch.
• noun A symbol for such a tone, indicating pitch by its position on the staff and duration by its shape.
• noun A key of an instrument, such as a piano.
• noun The characteristic vocal sound made by a songbird or other animal.
• noun The sign of a particular quality or emotion.
• noun Importance; consequence.
• noun Notice; observation.
• noun Obsolete A song, melody, or tune.
• transitive verb To observe carefully; notice: synonym: see.
• transitive verb To make a note of; write down.
• transitive verb To show; indicate.
• transitive verb To make mention of; remark.

from The Century Dictionary.

• To use; make use of; enjoy.
• To use for food; eat: as, he notes very little.
• To need; have occasion for.
• noun Use; employment.
• noun Utility; profit; advantage.
• noun Affair; matter; business; concern; event; occasion.
• noun Expedition; undertaking; enterprise; conflict; fray.
• noun A mark or token by which a thing may be known; a sign; stamp; badge; symbol; in logic, a character or quality.
• noun Significance; consequence; distinction; reputation.
• noun Notice; observation; heed.
• noun Notice; information; intelligence.
• noun A mark on the margin of a book drawing attention to something in the text; hence, a statement subsidiary to the text of a book elucidating or adding something; an explanatory or critical comment; an annotation.
• noun A minute or memorandum, intended to assist the memory, or for after use or reference: as, I made a note of the circumstance: generally in the plural: as, to take notes of a sermon or speech; to speak from notes.
• noun plural A report (verbatim or more or less condensed) of a speech, discourse, statement, testimony, or the like.
• noun A list of items; an inventory; a catalogue; a bill; an account; a reckoning.
• noun A written or printed paper acknowledging a debt and promising payment: as, a promissory note; a bank-note; a note of hand (that is, a signed promise to pay a sum of money); a negotiable note.
• noun A short letter; a billet.
• noun A diplomatic or official communication in writing.
• noun A small size of paper used for writing letters or notes.
• noun In music: In the staffnotation, a character or sign by which a tone is recorded and represented to the eye. A musical sound or tone, in general or particular: as, the note of a bird; the first note of a song, etc.
• noun A digital or key of the keyboard: as, the white and black notes of the pianoforte.
• noun Harmonious or melodious sound; air; tune; voice; tone.
• noun A point marked; a degree.
• noun A black digital on the keyboard.
• noun A tone produced from an open string of a stringed instrument, or a note representing such a tone.
• noun A white digital on the keyboard.
• noun Synonyms Annotation, etc. See remark, n.