The Collaborative International Dictionary of English v.0.48:

Tie \Tie\, v. t. [imp. & p. p. Tied(Obs. Tight); p. pr. &
   vb. n. Tying.] [OE. ti?en, teyen, AS. t[imac]gan,
   ti['e]gan, fr. te['a]g, te['a]h, a rope; akin to Icel. taug,
   and AS. te['o]n to draw, to pull. See Tug, v. t., and cf.
   Tow to drag.]
   1. To fasten with a band or cord and knot; to bind. "Tie the
      kine to the cart." --1 Sam. vi. 7.
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            My son, keep thy father's commandment, and forsake
            not the law of thy mother: bind them continually
            upon thine heart, and tie them about thy neck.
                                                  --Prov. vi.
                                                  20,21.
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   2. To form, as a knot, by interlacing or complicating a cord;
      also, to interlace, or form a knot in; as, to tie a cord
      to a tree; to knit; to knot. "We do not tie this knot with
      an intention to puzzle the argument." --Bp. Burnet.
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   3. To unite firmly; to fasten; to hold.
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            In bond of virtuous love together tied. --Fairfax.
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   4. To hold or constrain by authority or moral influence, as
      by knotted cords; to oblige; to constrain; to restrain; to
      confine.
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            Not tied to rules of policy, you find
            Revenge less sweet than a forgiving mind. --Dryden.
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   5. (Mus.) To unite, as notes, by a cross line, or by a curved
      line, or slur, drawn over or under them.
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   6. To make an equal score with, in a contest; to be even
      with.
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   To ride and tie. See under Ride.

   To tie down.
      (a) To fasten so as to prevent from rising.
      (b) To restrain; to confine; to hinder from action.

   To tie up, to confine; to restrain; to hinder from motion
      or action.
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