Source : Webster's Revised Unabridged Dictionary (1913)

Spade \Spade\, n. [AS. sp[ae]d; spada; akin to D. spade, G.
   spaten, Icel. spa[eth]i, Dan. & Sw. spade, L. spatha a
   spatula, a broad two-edged sword, a spathe, Gr. spa`qh. Cf.
   {Epaulet}, {Spade} at cards, {Spathe}, {Spatula}.]
   1. An implement for digging or cutting the ground, consisting
      usually of an oblong and nearly rectangular blade of iron,
      with a handle like that of a shovel. ``With spade and
      pickax armed.'' --Milton.

   2. [Sp. espada, literally, a sword; -- so caused because
      these cards among the Spanish bear the figure of a sword.
      Sp. espada is fr. L. spatha, Gr. spa`qh. See the Etymology
      above.] One of that suit of cards each of which bears one
      or more figures resembling a spade.

            ``Let spades be trumps!'' she said.   --Pope.

   3. A cutting instrument used in flensing a whale.

   {Spade bayonet}, a bayonet with a broad blade which may be
      used digging; -- called also {trowel bayonet}.

   {Spade handle} (Mach.), the forked end of a connecting rod in
      which a pin is held at both ends. See Illust. of {Knuckle
      joint}, under {Knuckle}.

Spade \Spade\, v. t. [imp. & p. p. {Spaded}; p. pr. & vb. n.
   {Spading}.]
   To dig with a spade; to pare off the sward of, as land, with
   a spade.

Spade \Spade\, n. [Cf. {Spay}, n.]
   1. (Zo["o]l.) A hart or stag three years old. [Written also
      {spaid}, {spayade}.]

   2. [Cf. L. spado.] A castrated man or beast.

Source : WordNet®

spade
     n 1: a playing card in the major suit of spades
     2: a sturdy hand shovel that can be pushed into the earth with
        the foot
     3: (ethnic slur) offensive name for a Black person; "only a
        Black can call another Black a nigga" [syn: {nigger}, {nigga},
         {coon}, {jigaboo}, {nigra}]
     v : dig (up) with a spade; "I spade compost into the flower
         beds"

Source : Free On-Line Dictionary of Computing

SPADE
     
        Specification Processing And Dependency Extraction.
        Specification language.  G.S. Boddy, ICL Mainframes Div,
        FLAG/UD/3DR.003