The Collaborative International Dictionary of English v.0.48:

Force \Force\, v. t. [imp. & p. p. Forced; p. pr. & vb. n.
   Forcing.] [OF. forcier, F. forcer, fr. LL. forciare,
   fortiare. See Force, n.]
   1. To constrain to do or to forbear, by the exertion of a
      power not resistible; to compel by physical, moral, or
      intellectual means; to coerce; as, masters force slaves to
      labor.
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   2. To compel, as by strength of evidence; as, to force
      conviction on the mind.
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   3. To do violence to; to overpower, or to compel by violence
      to one's will; especially, to ravish; to violate; to
      commit rape upon.
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            To force their monarch and insult the court.
                                                  --Dryden.
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            I should have forced thee soon wish other arms.
                                                  --Milton.
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            To force a spotless virgin's chastity. --Shak.
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   4. To obtain, overcome, or win by strength; to take by
      violence or struggle; specifically, to capture by assault;
      to storm, as a fortress; as, to force the castle; to force
      a lock.
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   5. To impel, drive, wrest, extort, get, etc., by main
      strength or violence; -- with a following adverb, as
      along, away, from, into, through, out, etc.
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            It stuck so fast, so deeply buried lay
            That scarce the victor forced the steel away.
                                                  --Dryden.
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            To force the tyrant from his seat by war. --Sahk.
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            Ethelbert ordered that none should be forced into
            religion.                             --Fuller.
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   6. To put in force; to cause to be executed; to make binding;
      to enforce. [Obs.]
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            What can the church force more?       --J. Webster.
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   7. To exert to the utmost; to urge; hence, to strain; to urge
      to excessive, unnatural, or untimely action; to produce by
      unnatural effort; as, to force a conceit or metaphor; to
      force a laugh; to force fruits.
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            High on a mounting wave my head I bore,
            Forcing my strength, and gathering to the shore.
                                                  --Dryden.
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   8. (Whist) To compel (an adversary or partner) to trump a
      trick by leading a suit of which he has none.
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   9. To provide with forces; to re["e]nforce; to strengthen by
      soldiers; to man; to garrison. [Obs.] --Shak.
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   10. To allow the force of; to value; to care for. [Obs.]
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             For me, I force not argument a straw. --Shak.

   Syn: To compel; constrain; oblige; necessitate; coerce;
        drive; press; impel.
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The Collaborative International Dictionary of English v.0.48:

Forcing \For"cing\, n.
   1. The accomplishing of any purpose violently, precipitately,
      prematurely, or with unusual expedition.
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   2. (Gardening) The art of raising plants, flowers, and fruits
      at an earlier season than the natural one, as in a hitbed
      or by the use of artificial heat.
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   Forcing bed or Forcing pit, a plant bed having an under
      layer of fermenting manure, the fermentation yielding
      bottom heat for forcing plants; a hotbed.

   Forcing engine, a fire engine.

   Forcing fit (Mech.), a tight fit, as of one part into a
      hole in another part, which makes it necessary to use
      considerable force in putting the two parts together.

   Forcing house, a greenhouse for the forcing of plants,
      fruit trees, etc.

   Forcing machine, a powerful press for putting together or
      separating two parts that are fitted tightly one into
      another, as for forcing a crank on a shaft, or for drawing
      off a car wheel from the axle.

   Forcing pump. See Force pump
      (b) .
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