Note
Middle English (in note (sense 4 of the noun) and note (sense 1 of the verb)): from Old French note (noun), noter (verb), from Latin nota ‘a mark’, notare ‘to mark’.
wiktionary
From Middle English note, from Old English not, nōt(“note, mark, sign”) and Old French note(“letter, note”), both from Latin nota(“mark, sign, remark, note”).
From Middle English note(“use, usefulness, profit”), from Old English notu(“use, enjoyment, advantage, profit, utility”), from Proto-Germanic *nutō(“enjoyment, utilisation”), from Proto-Indo-European *newd-(“to acquire, make use of”). Cognate with West Frisian not(“yield, produce, crop”), Dutch genot(“enjoyment, pleasure”), Dutch nut(“usefulness, utility, behoof”), German Nutzen(“benefit, usefulness, utility”), Icelandic not(“use”, noun). Related also to Old English notian(“to enjoy, make use of, employ”), Old English nēotan(“to use, enjoy”), Old High German niozan(“to use, enjoy”), Modern German benutzen(“to use”). Related to nait.
etymonline
note (v.)
c. 1200, noten, "observe, take mental note of, mark carefully," from Old French noter "indicate, designate; take note of, write down," from Latin notare "to mark, note, make a note," from nota "mark, sign, note, character, letter" (see note (n.)). Sense of "mention separately or specially among others" is from late 14c. Meaning "to set down in writing, make a memorandum of" is from early 14c. Related: Noted; noting.
note (n.)
c. 1300, "a song, music, melody; instrumental music; a bird-song; a musical note of a definite pitch," from Old French note and directly from Latin nota "letter, character, note," originally "a mark, sign, means of recognition," which traditionally has been connected to notus, past participle of noscere "to come to know," but de Vaan reports this is "impossible," and with no attractive alternative explanation, it is of unknown origin.
Meaning "notice, attention" is from early 14c.; that of "reputation, fame" is from late 14c. From late 14c. as "mark, sign, or token by which a thing may be known." From late 14c. as "a sign by which a musical tone is represented to the eye." Meaning "a brief written abstract of facts" is from 1540s; meaning "a short, informal written communication" is from 1590s. From 1550s as "a mark in the margin of a book calling attention to something in the text," hence "a statement subsidiary to the text adding or elucidating something." From 1680s as "a paper acknowledging a debts, etc." In perfumery, "a basic component of a fragrance which gives it its character," by 1905.
