'To sheer up' definitions:

Definition of 'To sheer up'

From: GCIDE
  • Sheer \Sheer\, v. i. [imp. & p. p. Sheered; p. pr. & vb. n. Sheering.] [D. sheren to shear, cut, withdraw, warp. See Shear.] To decline or deviate from the line of the proper course; to turn aside; to swerve; as, a ship sheers from her course; a horse sheers at a bicycle. [1913 Webster]
  • To sheer off, to turn or move aside to a distance; to move away.
  • To sheer up, to approach obliquely. [1913 Webster]