The Collaborative International Dictionary of English v.0.48:

Rot \Rot\, n.
   1. Process of rotting; decay; putrefaction.
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   2. (Bot.) A disease or decay in fruits, leaves, or wood,
      supposed to be caused by minute fungi. See Bitter rot,
      Black rot, etc., below.
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   3. [Cf. G. rotz glanders.] A fatal distemper which attacks
      sheep and sometimes other animals. It is due to the
      presence of a parasitic worm in the liver or gall bladder.
      See 1st Fluke, 2.
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            His cattle must of rot and murrain die. --Milton.
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   Bitter rot (Bot.), a disease of apples, caused by the
      fungus Glaeosporium fructigenum. --F. L. Scribner.

   Black rot (Bot.), a disease of grapevines, attacking the
      leaves and fruit, caused by the fungus Laestadia
      Bidwellii. --F. L. Scribner.

   Dry rot (Bot.) See under Dry.

   Grinder's rot (Med.) See under Grinder.

   Potato rot. (Bot.) See under Potato.

   White rot (Bot.), a disease of grapes, first appearing in
      whitish pustules on the fruit, caused by the fungus
      Coniothyrium diplodiella. --F. L. Scribner.
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The Collaborative International Dictionary of English v.0.48:

Dry \Dry\ (dr[imac]), a. [Compar. Drier; superl. Driest.]
   [OE. dru[yogh]e, druye, drie, AS. dryge; akin to LG.
   dr["o]ge, D. droog, OHG. trucchan, G. trocken, Icel. draugr a
   dry log. Cf. Drought, Drouth, 3d Drug.]
   1. Free from moisture; having little humidity or none; arid;
      not wet or moist; deficient in the natural or normal
      supply of moisture, as rain or fluid of any kind; -- said
      especially:
      (a) Of the weather: Free from rain or mist.
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                The weather, we agreed, was too dry for the
                season.                           --Addison.
      (b) Of vegetable matter: Free from juices or sap; not
          succulent; not green; as, dry wood or hay.
      (c) Of animals: Not giving milk; as, the cow is dry.
      (d) Of persons: Thirsty; needing drink.
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                Give the dry fool drink.          -- Shak
      (e) Of the eyes: Not shedding tears.
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                Not a dry eye was to be seen in the assembly. --
                                                  Prescott.
      (f) (Med.) Of certain morbid conditions, in which there is
          entire or comparative absence of moisture; as, dry
          gangrene; dry catarrh.
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   2. Destitute of that which interests or amuses; barren;
      unembellished; jejune; plain.
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            These epistles will become less dry, more
            susceptible of ornament.              --Pope.
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   3. Characterized by a quality somewhat severe, grave, or
      hard; hence, sharp; keen; shrewd; quaint; as, a dry tone
      or manner; dry wit.
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            He was rather a dry, shrewd kind of body. --W.
                                                  Irving.
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   4. (Fine Arts) Exhibiting a sharp, frigid preciseness of
      execution, or the want of a delicate contour in form, and
      of easy transition in coloring.
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   Dry area (Arch.), a small open space reserved outside the
      foundation of a building to guard it from damp.

   Dry blow.
      (a) (Med.) A blow which inflicts no wound, and causes no
          effusion of blood.
      (b) A quick, sharp blow.

   Dry bone (Min.), Smithsonite, or carbonate of zinc; -- a
      miner's term.

   Dry castor (Zool.) a kind of beaver; -- called also
      parchment beaver.

   Dry cupping. (Med.) See under Cupping.

   Dry dock. See under Dock.

   Dry fat. See Dry vat (below).

   Dry light, pure unobstructed light; hence, a clear,
      impartial view. --Bacon.
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            The scientific man must keep his feelings under
            stern control, lest they obtrude into his
            researches, and color the dry light in which alone
            science desires to see its objects.   -- J. C.
                                                  Shairp.

   Dry masonry. See Masonry.

   Dry measure, a system of measures of volume for dry or
      coarse articles, by the bushel, peck, etc.

   Dry pile (Physics), a form of the Voltaic pile, constructed
      without the use of a liquid, affording a feeble current,
      and chiefly useful in the construction of electroscopes of
      great delicacy; -- called also Zamboni's, from the names
      of the two earliest constructors of it.

   Dry pipe (Steam Engine), a pipe which conducts dry steam
      from a boiler.

   Dry plate (Photog.), a glass plate having a dry coating
      sensitive to light, upon which photographic negatives or
      pictures can be made, without moistening.

   Dry-plate process, the process of photographing with dry
      plates.

   Dry point. (Fine Arts)
      (a) An engraving made with the needle instead of the
          burin, in which the work is done nearly as in etching,
          but is finished without the use acid.
      (b) A print from such an engraving, usually upon paper.
      (c) Hence: The needle with which such an engraving is
          made.

   Dry rent (Eng. Law), a rent reserved by deed, without a
      clause of distress. --Bouvier.

   Dry rot, a decay of timber, reducing its fibers to the
      condition of a dry powdery dust, often accompanied by the
      presence of a peculiar fungus (Merulius lacrymans),
      which is sometimes considered the cause of the decay; but
      it is more probable that the real cause is the
      decomposition of the wood itself. --D. C. Eaton. Called
      also sap rot, and, in the United States, powder post.
      --Hebert.

   Dry stove, a hothouse adapted to preserving the plants of
      arid climates. --Brande & C.

   Dry vat, a vat, basket, or other receptacle for dry
      articles.

   Dry wine, that in which the saccharine matter and
      fermentation were so exactly balanced, that they have
      wholly neutralized each other, and no sweetness is
      perceptible; -- opposed to sweet wine, in which the
      saccharine matter is in excess.
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WordNet (r) 3.0 (2006):

dry rot
    n 1: a crumbling and drying of timber or bulbs or potatoes or
         fruit caused by a fungus
    2: a fungus causing dry rot

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "dry rot":
   blast, blight, cancer, canker, caries, carrion, decay,
   decomposition, foulness, fungus, gangrene, mildew, mold,
   mortification, moth, moth and rust, must, necrosis, pest,
   putrefaction, putrescence, putridity, putridness, rancidity,
   rancidness, rankness, rot, rottenness, rust, slough, smut,
   sphacelation, sphacelus, spoilage, tooth decay, worm