From The Collaborative International Dictionary of English v.0.48:
Sheer \Sheer\, n. 1. (Naut.) (a) The longitudinal upward curvature of the deck, gunwale, and lines of a vessel, as when viewed from the side. (b) The position of a vessel riding at single anchor and swinging clear of it. [1913 Webster]
2. A turn or change in a course. [1913 Webster]
Give the canoe a sheer and get nearer to the shore. --Cooper. [1913 Webster]
3. pl. Shears See Shear. [1913 Webster]
Sheer batten (Shipbuilding), a long strip of wood to guide the carpenters in following the sheer plan.
Sheer boom, a boom slanting across a stream to direct floating logs to one side.
Sheer hulk. See Shear hulk, under Hulk.
Sheer plan, or Sheer draught (Shipbuilding), a projection of the lines of a vessel on a vertical longitudinal plane passing through the middle line of the vessel.
Sheer pole (Naut.), an iron rod lashed to the shrouds just above the dead-eyes and parallel to the ratlines.
Sheer strake (Shipbuilding), the strake under the gunwale on the top side. --Totten.
To break sheer (Naut.), to deviate from sheer, and risk fouling the anchor. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Sheer \Sheer\, adv. Clean; quite; at once. [Obs.] --Milton. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Sheer \Sheer\, v. t. [See Shear.] To shear. [Obs.] --Dryden. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
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]
From The Collaborative International Dictionary of English v.0.48:
Sheer \Sheer\, a. [OE. shere, skere, pure, bright, Icel. sk?rr; akin to sk[imac]rr, AS. sc[imac]r, OS. sk[imac]ri, MHG. sch[imac]r, G. schier, Dan. sk?r, Sw. sk[aum]r, Goth. skeirs clear, and E. shine. [root]157. See Shine, v. i.] 1. Bright; clear; pure; unmixed. "Sheer ale." --Shak. [1913 Webster]
Thou sheer, immaculate, and silver fountain. --Shak. [1913 Webster]
2. Very thin or transparent; -- applied to fabrics; as, sheer muslin. [1913 Webster]
3. Being only what it seems to be; obvious; simple; mere; downright; as, sheer folly; sheer nonsense. "A sheer impossibility." --De Quincey. [1913 Webster]
It is not a sheer advantage to have several strings to one's bow. --M. Arnold. [1913 Webster]
4. Stright up and down; vertical; prpendicular. [1913 Webster]
A sheer precipice of a thousand feet. --J. D. Hooker. [1913 Webster]
It was at least Nine roods of sheer ascent. --Wordsworth. [1913 Webster]