The Collaborative International Dictionary of English v.0.48:

Protract \Pro*tract"\, v. t. [imp. & p. p. Protracted; p. pr.
   vb. n. Protracting.] [L. protractus, p. p. of protrahere to
   forth, protract; pro forward + trahere to draw. See
   Portrait, Portray.]
   1. To draw out or lengthen in time or (rarely) in space; to
      continue; to prolong; as, to protract an argument; to
      protract a war.
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   2. To put off to a distant time; to delay; to defer; as, to
      protract a decision or duty. --Shak.
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   3. (Surv.) To draw to a scale; to lay down the lines and
      angles of, with scale and protractor; to plot.
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   4. (Zool.) To extend; to protrude; as, the cat can protract
      its claws; -- opposed to retract.
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