Source : Webster's Revised Unabridged Dictionary (1913)

Sex \Sex\, n. [L. sexus: cf. F. sexe.]
   1. The distinguishing peculiarity of male or female in both
      animals and plants; the physical difference between male
      and female; the assemblage of properties or qualities by
      which male is distinguished from female.

   2. One of the two divisions of organic beings formed on the
      distinction of male and female.

   3. (Bot.)
      (a) The capability in plants of fertilizing or of being
          fertilized; as, staminate and pistillate flowers are
          of opposite sexes.
      (b) One of the groups founded on this distinction.

   {The sex}, the female sex; women, in general.

Source : WordNet®

sex
     n 1: activities associated with sexual intercourse; "they had sex
          in the back seat" [syn: {sexual activity}, {sexual
          practice}, {sex activity}]
     2: either of the two categories (male or female) into which
        most organisms are divided; "the war between the sexes"
     3: all of the feelings resulting from the urge to gratify
        sexual impulses; "he wanted a better sex life"; "the film
        contained no sex or violence" [syn: {sexual urge}]
     4: the properties that distinguish organisms on the basis of
        their reproductive roles; "she didn't want to know the sex
        of the foetus" [syn: {gender}, {sexuality}]

sex
     v 1: stimulate sexually; "This movie usually arouses the male
          audience" [syn: {arouse}, {excite}, {turn on}, {wind up}]
     2: tell the sex (of young chickens)

Source : Free On-Line Dictionary of Computing

SEX
     
        /seks/ [Sun Users' Group & elsewhere] 1. Software EXchange.  A
        technique invented by the blue-green algae hundreds of
        millions of years ago to speed up their evolution, which had
        been terribly slow up until then.  Today, SEX parties are
        popular among hackers and others (of course, these are no
        longer limited to exchanges of genetic software).  In general,
        SEX parties are a {Good Thing}, but unprotected SEX can
        propagate a {virus}.  See also {pubic directory}.
     
        2. The {mnemonic} often used for Sign EXtend, a machine
        instruction found in the {PDP-11} and many other
        architectures.  The {RCA 1802} chip used in the early {Elf}
        and SuperElf {personal computers} had a "SEt X register" SEX
        instruction, but this seems to have had little folkloric
        impact.
     
        DEC's engineers nearly got a {PDP-11} {assembler} that used
        the "SEX" mnemonic out the door at one time, but (for once)
        marketing wasn't asleep and forced a change.  That wasn't the
        last time this happened, either.  The author of "The Intel
        8086 Primer", who was one of the original designers of the
        {Intel 8086}, noted that there was originally a "SEX"
        instruction on that processor, too.  He says that Intel
        management got cold feet and decreed that it be changed, and
        thus the instruction was renamed "CBW" and "CWD" (depending on
        what was being extended).  The {Intel 8048} (the
        {microcontroller} used in {IBM PC} keyboards) is also missing
        straight "SEX" but has logical-or and logical-and instructions
        "ORL" and "ANL".
     
        The {Motorola 6809}, used in the UK's "{Dragon 32}" {personal
        computer}, actually had an official "SEX" instruction; the
        {6502} in the {Apple II} with which it competed did not.
        British hackers thought this made perfect mythic sense; after
        all, it was commonly observed, you could (on some theoretical
        level) have sex with a dragon, but you can't have sex with an
        apple.
     
        [{Jargon File}]
     
        (1998-03-03)