The Collaborative International Dictionary of English v.0.48:

Ash \Ash\, n.,
   sing. of Ashes.
   [1913 Webster]

   Note: Ash is rarely used in the singular except in connection
         with chemical or geological products; as, soda ash,
         coal which yields a red ash, etc., or as a qualifying
         or combining word; as, ash bin, ash heap, ash hole, ash
         pan, ash pit, ash-grey, ash-colored, pearlash, potash.
         [1913 Webster]

   Bone ash, burnt powered; bone earth.

   Volcanic ash. See under Ashes.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ash \Ash\ ([a^]sh), n. [OE. asch, esh, AS. [ae]sc; akin to OHG.
   asc, Sw. & Dan. ask, Icel. askr, D. esch, G. esche.]
   1. (Bot.) A genus of trees of the Olive family, having
      opposite pinnate leaves, many of the species furnishing
      valuable timber, as the European ash (Fraxinus
      excelsior) and the white ash (Fraxinus Americana).
      [1913 Webster]

   Prickly ash (Zanthoxylum Americanum) and Poison ash
      (Rhus venenata) are shrubs of different families,
      somewhat resembling the true ashes in their foliage.

   Mountain ash. See Roman tree, and under Mountain.
      [1913 Webster]

   2. The tough, elastic wood of the ash tree.
      [1913 Webster]

   Note: Ash is used adjectively, or as the first part of a
         compound term; as, ash bud, ash wood, ash tree, etc.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ash \Ash\, v. t.
   To strew or sprinkle with ashes. --Howell.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ash
    n 1: the residue that remains when something is burned
    2: any of various deciduous pinnate-leaved ornamental or timber
       trees of the genus Fraxinus [syn: ash, ash tree]
    3: strong elastic wood of any of various ash trees; used for
       furniture and tool handles and sporting goods such as
       baseball bats
    v 1: convert into ashes

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "ash":
   alluvion, alluvium, ashes, brand, calx, carbon, charcoal, cinder,
   cinders, clinker, clinkers, coal, coals, coke, coom, deposition,
   deposits, diluvium, draff, dregs, dross, ember, embers, feces,
   froth, fume, fumes, grounds, lava, lees, loess, moraine, offscum,
   precipitate, precipitation, reek, scoria, scum, sediment,
   settlings, silt, sinter, slag, smoke, smudge, smut, soot,
   sublimate, sullage



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ASH
       Almquist SHell (BSD, Unix, Shell), "ash"


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

ash

    A Bourne Shell clone by Kenneth Almquist.  It works
   pretty well.  For running scripts, it is sometimes better and
   sometimes worse than Bash.

   Ash runs under 386BSD, NetBSD, FreeBSD, and Linux.

   FTP Linux version
   (ftp://ftp.win.tue.nl/pub/linux/ports/ash-linux-0.1.tar.gz).

   (1995-07-20)


Easton's 1897 Bible Dictionary:

Ash
   (Heb. o'ren, "tremulous"), mentioned only Isa. 44:14 (R.V., "fir
   tree"). It is rendered "pine tree" both in the LXX. and Vulgate
   versions. There is a tree called by the Arabs _aran_, found
   still in the valleys of Arabia Petraea, whose leaf resembles
   that of the mountain ash. This may be the tree meant. Our ash
   tree is not known in Syria.