Source : Webster's Revised Unabridged Dictionary (1913)

Spill \Spill\, v. t. [imp. & p. p. {Spilt}; p. pr. & vb. n.
   {Spilling}.]
   To cover or decorate with slender pieces of wood, metal,
   ivory, etc.; to inlay. [Obs.] --Spenser.

Spill \Spill\, v. t. [imp. & p. p. {Spilled}, or {Spilt}; p. pr.
   & vb. n. {Spilling}.] [OE. spillen,sually, to destroy, AS.
   spillan, spildan, to destroy; akin to Icel. spilla to
   destroy, Sw. spilla to spill, Dan. spilde,G. & D. spillen to
   squander, OHG. spildan.]
   1. To destroy; to kill; to put an end to. [Obs.]

            And gave him to the queen, all at her will To choose
            whether she would him save or spill.  --Chaucer.

            Greater glory think [it] to save than spill.
                                                  --Spenser.

   2. To mar; to injure; to deface; hence, to destroy by misuse;
      to waste. [Obs.]

            They [the colors] disfigure the stuff and spill the
            whole workmanship.                    --Puttenham.

            Spill not the morning, the quintessence of day, in
            recreations.                          --Fuller.

   3. To suffer to fall or run out of a vessel; to lose, or
      suffer to be scattered; -- applied to fluids and to
      substances whose particles are small and loose; as, to
      spill water from a pail; to spill quicksilver from a
      vessel; to spill powder from a paper; to spill sand or
      flour.

   Note: Spill differs from pour in expressing accidental loss,
         -- a loss or waste contrary to purpose.

   4. To cause to flow out and be lost or wasted; to shed, or
      suffer to be shed, as in battle or in manslaughter; as, a
      man spills another's blood, or his own blood.

            And to revenge his blood so justly spilt. --Dryden.

   5. (Naut.) To relieve a sail from the pressure of the wind,
      so that it can be more easily reefed or furled, or to
      lessen the strain.

   {Spilling line} (Naut.), a rope used for spilling, or
      dislodging, the wind from the belly of a sail. --Totten.

Spilt \Spilt\,
   imp. & p. p. of {Spill}. Spilled.

Source : WordNet®

spill
     v 1: cause or allow (a liquid substance) to run or flow from a
          container; "spill the milk"; "splatter water" [syn: {slop},
           {splatter}]
     2: flow, run or fall out and become lost; "The milk spilled
        across the floor"; "The wine spilled onto the table" [syn:
         {run out}]
     3: cause or allow (a solid substance) to flow or run out or
        over; "spill the beans all over the table" [syn: {shed}, {disgorge}]
     4: pour out in drops or small quantities or as if in drops or
        small quantities; "shed tears"; "spill blood"; "God shed
        His grace on Thee" [syn: {shed}, {pour forth}]
     5: reveal information; "If you don't oblige me, I'll talk!";
        "The former employee spilled all the details" [syn: {talk}]
     [also: {spilt}]

spill
     n 1: liquid that is spilled; "clean up the spills"
     2: a channel that carries excess water over or around a dam or
        other obstruction [syn: {spillway}, {wasteweir}]
     3: the act of allowing a fluid to escape [syn: {spillage}, {release}]
     4: a sudden drop from an upright position; "he had a nasty
        spill on the ice" [syn: {tumble}, {fall}]
     [also: {spilt}]

spilt
     See {spill}