1. [v]  record data on a computer; "boot-up instructions are written on the hard disk"
2. [v]  communicate or express by writing; "Please write to me every week"
3. [v]  communicate (with) in writing; "Write her soon, please!"
4. [v]  communicate by letter; "He wrote that he would be coming soon"
5. [v]  mark or trace on a surface; "The artist wrote Chinese characters on a big piece of white paper"
6. [v]  produce a literary work; "She composed a poem"; "He wrote four novels"
7. [v]  write or name the letters that comprise the conventionally accepted form of (a word or part of a word); "He spelled the word wrong in this letter"
8. [v]  write music; "Beethoven composed nine symphonies"
9. [v]  have (one's written work) issued for publication; "How many books did Georges Simenon write?"; "She published 25 books during her long career"

1. \Write\, v. t. [imp. {Wrote}; p. p. {Written}; Archaic
   imp. & p. p. {Writ}; p. pr. & vb. n. {Writing}.] [OE. writen,
   AS. wr[=i]tan; originally, to scratch, to score; akin to OS.
   wr[=i]tan to write, to tear, to wound, D. rijten to tear, to
   rend, G. reissen, OHG. r[=i]zan, Icel. r[=i]ta to write,
   Goth. writs a stroke, dash, letter. Cf. {Race} tribe,
   lineage.]
   1. To set down, as legible characters; to form the conveyance
      of meaning; to inscribe on any material by a suitable
      instrument; as, to write the characters called letters; to
      write figures.
   2. To set down for reading; to express in legible or
      intelligible characters; to inscribe; as, to write a deed;
      to write a bill of divorcement; hence, specifically, to
      set down in an epistle; to communicate by letter.
            Last night she enjoined me to write some lines to
            one she loves.                        --Shak.
            I chose to write the thing I durst not speak To her
            I loved.                              --Prior.
   3. Hence, to compose or produce, as an author.
            I purpose to write the history of England from the
            accession of King James the Second down to a time
            within the memory of men still living. --Macaulay.
   4. To impress durably; to imprint; to engrave; as, truth
      written on the heart.
   5. To make known by writing; to record; to prove by one's own
      written testimony; -- often used reflexively.
            He who writes himself by his own inscription is like
            an ill painter, who, by writing on a shapeless
            picture which he hath drawn, is fain to tell
            passengers what shape it is, which else no man could
            imagine.                              --Milton.
   {To write to}, to communicate by a written document to.
   {Written laws}, laws deriving their force from express
      legislative enactment, as contradistinguished from
      unwritten, or common, law. See the Note under {Law}, and
      {Common law}, under {Common}, a.
   

2. \Write\, v. i.
   1. To form characters, letters, or figures, as representative
      of sounds or ideas; to express words and sentences by
      written signs. --Chaucer.
            So it stead you, I will write, Please you command.
                                                  --Shak.
   2. To be regularly employed or occupied in writing, copying,
      or accounting; to act as clerk or amanuensis; as, he
      writes in one of the public offices.
   3. To frame or combine ideas, and express them in written
      words; to play the author; to recite or relate in books;
      to compose.
            They can write up to the dignity and character of
            the authors.                          --Felton.
   4. To compose or send letters.
            He wrote for all the Jews that went out of his realm
            up into Jewry concerning their freedom. --1 Esdras
                                                  iv. 49.
   

1. Unix's simple talk command and protocol. write has been largely superseded by talk and then irc.

An enhancement, RWP, has been proposed.

2. A simple text editor for Windows.