What is "warped surface"

Warp \Warp\ (w[add]rp), v. t. [imp. & p. p. Warped (w[add]rpt); p. pr. & vb. n. Warping.] [OE. warpen; fr. Icel. varpa to throw, cast, varp a casting, fr. verpa to throw; akin to Dan. varpe to warp a ship, Sw. varpa, AS. weorpan to cast, OS. werpan, OFries. werpa, D. & LG. werpen, G. werfen, Goth. wa['i]rpan; cf. Skr. v[.r]j to twist.

1. To throw; hence, to send forth, or throw out, as words; to utter. [Obs.]
   --Piers Plowman.

2. To turn or twist out of shape; esp., to twist or bend out of a flat plane by contraction or otherwise.

   The planks looked warped.
   --Coleridge.

   Walter warped his mouth at this To something so mock solemn, that I laughed.
   --Tennyson.

3. To turn aside from the true direction; to cause to bend or incline; to pervert.

   This first avowed, nor folly warped my mind.
   --Dryden.

   I have no private considerations to warp me in this controversy.
   --Addison.

   We are divested of all those passions which cloud the intellects, and warp the understandings, of men.
   --Southey.

4. To weave; to fabricate. [R. & Poetic.]
   --Nares.

   While doth he mischief warp.
   --Sternhold.

5. (Naut.) To tow or move, as a vessel, with a line, or warp, attached to a buoy, anchor, or other fixed object.

6. To cast prematurely, as young; -- said of cattle, sheep, etc. [Prov. Eng.]

7. (Agric.) To let the tide or other water in upon (lowlying land), for the purpose of fertilization, by a deposit of warp, or slimy substance. [Prov. Eng.]

8. (Rope Making) To run off the reel into hauls to be tarred, as yarns.

9. (Weaving) To arrange (yarns) on a warp beam.

10. (A["e]ronautics) To twist the end surfaces of (an a["e]rocurve in an airfoil) in order to restore or maintain equilibrium.

    Warped surface (Geom.), a surface generated by a straight line moving so that no two of its consecutive positions shall be in the same plane.
    --Davies & Peck.