WordNet (r) 3.0 (2006):

smiley
    n 1: an emoticon of a smiling face

The Jargon File (version 4.4.7, 29 Dec 2003):

smiley
 n.

    See emoticon.


The Free On-line Dictionary of Computing (30 December 2018):

emoticon
:-)
smiley
smilies

    /ee-moh'ti-kon/ (Or "smiley") An ASCII glyph
   used to indicate an emotional state in text-only electronic
   messaging systems such as chat, electronic mail, SMS or
   news.  Although originally intended mostly as jokes,
   emoticons are widely recognised if not expected; the lack of
   verbal and visual cues can otherwise cause non-serious
   comments to be misinterpreted, resulting in offence, arguments
   and flame wars.

   Hundreds of emoticons have been proposed, but only a few are
   in common use.  These include:

    :-)	"smiley face" (for humour, laughter,
   	friendliness, occasionally sarcasm)

    :-(	"frowney face" (for sadness, anger, or upset)

    ;-)	"half-smiley" (ha ha only serious); also
   	known as "semi-smiley" or "winkey face".

    :-/	"wry face"

   These are more recognisable if you tilt your head to the left.
   The first two are by far the most frequently encountered.
   Hyphenless forms of them are also common.  The acronym "lol"
   is also often used in the same context for the same effect
   (and is easier to type).

   The emoticon was invented by one Scott Fahlman on the CMU
   bboard systems on 1982-09-19.  He later wrote: "I had no
   idea that I was starting something that would soon pollute all
   the world's communication channels."  GLS confirms that he
   remembers this original posting, which has subsequently been
   retrieved from a backup
   (http://research.microsoft.com/~mbj/Smiley/BBoard_Contents.html).

   As with exclamation marks, overuse of the smiley is a mark of
   loserhood!  More than one per paragraph is a fairly sure sign
   that you've gone over the line.

   [Jargon File]

   (2010-05-16)


U.S. Gazetteer Places (2000):

Smiley, TX -- U.S. city in Texas
   Population (2000):    453
   Housing Units (2000): 202
   Land area (2000):     0.520793 sq. miles (1.348847 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.520793 sq. miles (1.348847 sq. km)
   FIPS code:            68300
   Located within:       Texas (TX), FIPS 48
   Location:             29.269402 N, 97.636850 W
   ZIP Codes (1990):     78159
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Smiley, TX
    Smiley