The Collaborative International Dictionary of English v.0.48:

Hold \Hold\, v. i.
   In general, to keep one's self in a given position or
   condition; to remain fixed. Hence:
   [1913 Webster]

   1. Not to move; to halt; to stop; -- mostly in the
      imperative.
      [1913 Webster]

            And damned be him that first cries, "Hold, enough!"
                                                  --Shak.
      [1913 Webster]

   2. Not to give way; not to part or become separated; to
      remain unbroken or unsubdued.
      [1913 Webster]

            Our force by land hath nobly held.    --Shak.
      [1913 Webster]

   3. Not to fail or be found wanting; to continue; to last; to
      endure a test or trial; to abide; to persist.
      [1913 Webster]

            While our obedience holds.            --Milton.
      [1913 Webster]

            The rule holds in land as all other commodities.
                                                  --Locke.
      [1913 Webster]

   4. Not to fall away, desert, or prove recreant; to remain
      attached; to cleave; -- often with with, to, or for.
      [1913 Webster]

            He will hold to the one and despise the other.
                                                  --Matt. vi. 24
      [1913 Webster]

   5. To restrain one's self; to refrain.
      [1913 Webster]

            His dauntless heart would fain have held
            From weeping, but his eyes rebelled.  --Dryden.
      [1913 Webster]

   6. To derive right or title; -- generally with of.
      [1913 Webster]

            My crown is absolute, and holds of none. --Dryden.
      [1913 Webster]

            His imagination holds immediately from nature.
                                                  --Hazlitt.
      [1913 Webster]

   Hold on! Hold up! wait; stop; forbear. [Collog] -- To
   hold forth, to speak in public; to harangue; to preach.
      --L'Estrange.

   To hold in, to restrain one's self; as, he wanted to laugh
      and could hardly hold in.

   To hold off, to keep at a distance.

   To hold on, to keep fast hold; to continue; to go on. "The
      trade held on for many years," --Swift.

   To hold out, to last; to endure; to continue; to maintain
      one's self; not to yield or give way.

   To hold over, to remain in office, possession, etc., beyond
      a certain date.

   To hold to or To hold with, to take sides with, as a
      person or opinion.

   To hold together, to be joined; not to separate; to remain
      in union. --Dryden. --Locke.

   To hold up.
      (a) To support one's self; to remain unbent or unbroken;
          as, to hold up under misfortunes.
      (b) To cease raining; to cease to stop; as, it holds up.
          --Hudibras.
      (c) To keep up; not to fall behind; not to lose ground.
          --Collier.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hold up \Hold up\ (h[=o]ld [u^]p"), v. t.
   1. To rob, usually at gunpoint or knifepoint.
      [PJC]

   2. To delay; as, bad weather held up the satellite launch for
      two days.
      [PJC]

WordNet (r) 3.0 (2006):

hold up
    v 1: be the physical support of; carry the weight of; "The beam
         holds up the roof"; "He supported me with one hand while I
         balanced on the beam"; "What's holding that mirror?" [syn:
         hold, support, sustain, hold up]
    2: hold up something as an example; hold up one's achievements
       for admiration
    3: cause to be slowed down or delayed; "Traffic was delayed by
       the bad weather"; "she delayed the work that she didn't want
       to perform" [syn: delay, detain, hold up] [ant:
       hurry, rush]
    4: rob at gunpoint or by means of some other threat [syn: hold
       up, stick up]
    5: continue to live through hardship or adversity; "We went
       without water and food for 3 days"; "These superstitions
       survive in the backwaters of America"; "The race car driver
       lived through several very serious accidents"; "how long can
       a person last without food and water?" [syn: survive,
       last, live, live on, go, endure, hold up, hold
       out]
    6: resist or confront with resistance; "The politician defied
       public opinion"; "The new material withstands even the
       greatest wear and tear"; "The bridge held" [syn: defy,
       withstand, hold, hold up]
    7: resist or withstand wear, criticism, etc.; "Her shoes won't
       hold up"; "This theory won't hold water" [syn: stand up,
       hold up, hold water]