The Collaborative International Dictionary of English v.0.48:

Part \Part\ (p[aum]rt), v. t. [imp. & p. p. Parted; p. pr. &
   vb. n. Parting.] [F. partir, L. partire, partiri, p. p.
   partitus, fr. pars, gen. partis, a part. See Part, n.]
   [1913 Webster]
   1. To divide; to separate into distinct parts; to break into
      two or more parts or pieces; to sever. "Thou shalt part it
      in pieces." --Lev. ii. 6.
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            There, [celestial love] parted into rainbow hues.
                                                  --Keble.
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   2. To divide into shares; to divide and distribute; to allot;
      to apportion; to share.
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            To part his throne, and share his heaven with thee.
                                                  --Pope.
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            They parted my raiment among them.    --John xix.
                                                  24.
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   3. To separate or disunite; to cause to go apart; to remove
      from contact or contiguity; to sunder.
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            The Lord do so to me, and more also, if aught but
            death part thee and me.               --Ruth i. 17.
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            While he blessed them, he was parted from them, and
            carried up into heaven.               --Luke xxiv.
                                                  51.
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            The narrow seas that part
            The French and English.               --Shak.
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   4. Hence: To hold apart; to stand between; to intervene
      betwixt, as combatants.
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            The stumbling night did part our weary powers.
                                                  --Shak.
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   5. To separate by a process of extraction, elimination, or
      secretion; as, to part gold from silver.
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            The liver minds his own affair, . . .
            And parts and strains the vital juices. --Prior.
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   6. To leave; to quit. [Obs.]
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            Since presently your souls must part your bodies.
                                                  --Shak.
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   7. To separate (a collection of objects) into smaller
      collections; as, to part one's hair in the middle.
      [PJC]

   To part a cable (Naut.), to break it.

   To part company, to separate, as travelers or companions.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Parting \Par"ting\ (p[aum]rt"[i^]ng), a. [From Part, v.]
   1. Serving to part; dividing; separating.
      [1913 Webster]

   2. Given when departing; as, a parting shot; a parting
      salute. "Give him that parting kiss." --Shak.
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   3. Departing. "Speed the parting guest." --Pope.
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   4. Admitting of being parted; partible.
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   Parting fellow, a partner. [Obs.] --Chaucer.

   Parting pulley. See under Pulley.

   Parting sand (Founding), dry, nonadhesive sand, sprinkled
      upon the partings of a mold to facilitate the separation.


   Parting strip (Arch.), in a sash window, one of the thin
      strips of wood let into the pulley stile to keep the
      sashes apart; also, the thin piece inserted in the window
      box to separate the weights.

   Parting tool (Mach.), a thin tool, used in turning or
      planing, for cutting a piece in two.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Parting \Par"ting\ (p[aum]rt"[i^]ng), n.
   1. The act of parting or dividing; the state of being parted;
      division; separation. "The parting of the way." --Ezek.
      xxi. 21.
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   2. A separation; a leave-taking. --Shak.
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            And there were sudden partings, such as press
            The life from out young hearts.       --Byron.
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   3. A surface or line of separation where a division occurs.
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   4. (Founding) The surface of the sand of one section of a
      mold where it meets that of another section.
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   5. (Chem.) The separation and determination of alloys; esp.,
      the separation, as by acids, of gold from silver in the
      assay button.
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   6. (Geol.) A joint or fissure, as in a coal seam.
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   7. (Naut.) The breaking, as of a cable, by violence.
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   8. (Min.) Lamellar separation in a crystallized mineral, due
      to some other cause than cleavage, as to the presence of
      twinning lamell[ae].
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WordNet (r) 3.0 (2006):

parting
    n 1: the act of departing politely; "he disliked long
         farewells"; "he took his leave"; "parting is such sweet
         sorrow" [syn: farewell, leave, leave-taking,
         parting]
    2: a line of scalp that can be seen when sections of hair are
       combed in opposite directions; "his part was right in the
       middle" [syn: part, parting]

Moby Thesaurus II by Grady Ward, 1.0:

141 Moby Thesaurus words for "parting":
   Godspeed, abandonment, abstraction, adieu, alienation, aloha,
   annihilation, bane, biological death, breaking up, breakup,
   cessation of life, cleaving, clinical death, closing, concluding,
   conge, crossing the bar, curtains, deactivation, death,
   death knell, deathbed, debt of nature, decampment, decease, demise,
   demobilization, departing, departure, detachment, diaspora,
   disarticulation, disassociation, disbandment, disconnectedness,
   disconnection, discontinuity, disengagement, disintegration,
   disjointing, disjunction, disjunctive, dislocation, dismissal,
   disorganization, dispersal, dispersion, dissolution, disunion,
   dividing, division, divorce, divorcement, doch-an-dorrach, doom,
   dying, ebb of life, egress, end, end of life, ending, escape,
   eternal rest, evacuation, exit, exodus, expiration, extinction,
   extinguishment, farewell, final, final summons, finger of death,
   flight, getaway, going, going off, good-bye, grave, hand of death,
   hegira, incoherence, isolation, jaws of death, knell, last,
   last debt, last muster, last rest, last roundup, last sleep, leave,
   leave-taking, leaving, leaving life, loss of life, luxation,
   making an end, outward-bound, parting words, partition, passing,
   passing away, passing over, perishing, quietus, release, removal,
   rest, retirement, retreat, reward, rift, rupture, segmentation,
   send-off, sentence of death, separating, separation, separatism,
   separative, shades of death, shadow of death, sleep, somatic death,
   split, split-up, splitting, stirrup cup, subdivision, subtraction,
   summons of death, valediction, valedictorian, valedictory,
   valedictory address, viaticum, walkout, withdrawal, zoning