D defs.my
Entry 2 senses Webster, 1913

Blinder

/blīn'-dẽr/ · Blind·er · IPA /ˈblaɪndɚ/
01 n. One who, or that which, blinds.
  1. 1.
    One who, or that which, blinds.
  2. 2.
    One of the leather screens on a bridle, to hinder a horse from seeing objects at the side; a blinker.(Saddlery)