Split, a.
 1. Divided; cleft.
 2. Bot. Divided deeply; cleft.
 3. Exchanges (a) Divided so as to be done or executed part at one time or price and part at another time or price; -- said of an order, sale, etc. (b) Of quotations, given in sixteenth, quotations in eighths being regular; as, 10is a split quotation. (c) London Stock Exchange Designating ordinary stock that has been divided into preferred ordinary and deferred ordinary.
 Split pease, hulled pease split for making soup, etc.
 Split pin Mach., a pin with one end split so that it may be spread open to secure it in its place.
 Split pulley, a parting pulley. See under Pulley.
 Split ring, a ring with overlapped or interlocked ends which may be sprung apart so that objects, as keys, may be strung upon the ring or removed from it.
 Split ticket, a ballot in which a voter votes for a portion of the candidates nominated by one party, candidates of other parties being substituted for those omitted. [U.S.]

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From: Webster's Revised Unabridged Dictionary (1913)

 Tick·et n.  A small piece of paper, cardboard, or the like, serving as a notice, certificate, or distinguishing token of something. Specifically: --
 (a) A little note or notice. [Obs. or Local]
    He constantly read his lectures twice a week for above forty years, giving notice of the time to his auditors in a ticket on the school doors.   --Fuller.
 (b) A tradesman's bill or account. [Obs.]
 Note: ☞ Hence the phrase on ticket, on account; whence, by abbreviation, came the phrase on tick. See 1st Tick.
 Your courtier is mad to take up silks and velvets
 On ticket for his mistress.   --J. Cotgrave.
 (c) A certificate or token of right of admission to a place of assembly, or of passage in a public conveyance; as, a theater ticket; a railroad or steamboat ticket.
 (d) A label to show the character or price of goods.
 (e) A certificate or token of a share in a lottery or other scheme for distributing money, goods, or the like.
 (f) Politics A printed list of candidates to be voted for at an election; a set of nominations by one party for election; a ballot. [U. S.]
    The old ticket forever! We have it by thirty-four votes.   --Sarah Franklin (1766).
 Scratched ticket, a ticket from which the names of one or more of the candidates are scratched out.
 Split ticket, a ticket representing different divisions of a party, or containing candidates selected from two or more parties.
 Straight ticket, a ticket containing the regular nominations of a party, without change.
 Ticket day Com., the day before the settling or pay day on the stock exchange, when the names of the actual purchasers are rendered in by one stockbroker to another. [Eng.] --Simmonds.
 Ticket of leave, a license or permit given to a convict, or prisoner of the crown, to go at large, and to labor for himself before the expiration of his sentence, subject to certain specific conditions. [Eng.] --Simmonds.
 Ticket porter, a licensed porter wearing a badge by which he may be identified. [Eng.]

From: WordNet (r) 2.0

 split ticket
      n : a ballot cast by a voter who votes for candidates from more
          than one party [ant: straight ticket]