Curving

from WordNet (r) 3.0 (2006)

curving
    adj 1: having or marked by a curve or smoothly rounded bend;
           "the curved tusks of a walrus"; "his curved lips
           suggested a smile but his eyes were hard" [syn: {curved},
           {curving}] [ant: {straight}]

from The Collaborative International Dictionary of English v.0.48

Curve \Curve\, v. t. [imp. & p. p. {Curved} (k[^u]rvd); p. pr. &
   vb. n. {Curving}.] [L. curvare., fr. curvus. See {Curve}, a.,
   {Curb}.]
   To bend; to crook; as, to curve a line; to curve a pipe; to
   cause to swerve from a straight course; as, to curve a ball
   in pitching it.
   [1913 Webster]