1. (a.) Utter; complete; steep; thin or transparent; -- applied to fabrics\.
2. (v. i.) Very thin or transparent; -- applied to fabrics; as, sheer muslin.
3. (v. i.) Being only what it seems to be; obvious; simple; mere; downright; as, sheer folly; sheer nonsense.
4. (v. i.) Straight up and down; vertical; perpendicular.
5. (adv.) Clean; quite; at once.
6. (v. t.) To shear.
7. (v. i.) 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.
8. (n.) The longitudinal upward curvature of the deck, gunwale, and lines of a vessel, as when viewed from the side.
9. (n.) The position of a vessel riding at single anchor and swinging clear of it.