What is the meaning of sheer?

verb

• Turn sharply; change direction abruptly.
  • usage: "The car cut to the left at the intersection"; "The motorbike veered to the right"
  • synonyms: swerve, curve, trend, veer, slue, slew, cut
• Cause to sheer.
  • usage: "She sheered her car around the obstacle"

adjective

• Complete and without restriction or qualification; sometimes used informally as intensifiers.
  • usage: "absolute freedom"; "an absolute dimwit"; "a downright lie"; "out-and-out mayhem"; "an out-and-out lie"; "a rank outsider"; "many right-down vices"; "got the job through sheer persistence"; "sheer stupidity"
  • synonyms: absolute, downright, out-and-out, rank, right-down
• Not mixed with extraneous elements.
  • usage: "plain water"; "sheer wine"; "not an unmixed blessing"
  • synonyms: plain, unmingled, unmixed
• Very steep; having a prominent and almost vertical front.
  • usage: "a bluff headland"; "where the bold chalk cliffs of England rise"; "a sheer descent of rock"
  • synonyms: bluff, bold
• So thin as to transmit light.
  • usage: "a hat with a diaphanous veil"; "filmy wings of a moth"; "gauzy clouds of dandelion down"; "gossamer cobwebs"; "sheer silk stockings"; "transparent chiffon"; "vaporous silks"
  • synonyms: diaphanous, filmy, gauzy, gauze-like, gossamer, see-through, transparent, vaporous, vapourous, cobwebby

adverb

• Straight up or down without a break.
  • synonyms: perpendicularly
• Directly.
  • usage: "he fell sheer into the water"