A blinder for horses; a flap of leather on a horse's bridle to prevent him from seeing objects as his side hence, whatever obstructs sight or discernment. "Nor bigots who but one way see, through blinkers of authority."
3.
pl. A kind of goggles, used to protect the eyes form glare, etc.
... sotto voice and with a flow of red suffusing his face, Alphonse Michelson turned to Gertie Dobriner, his hand curved blinker fashion to inclose ... — Every Soul Hath Its Song • Fannie Hurst
... grisly head he wore a large white turban. His colour might once have been brown, but it was now as black as that of a negro, frightfully scarred and marked all over. He had but one eye, and that was a blinker, which twisted and turned in every direction when he spoke, except at the person whom he was addressing. His lips were thick, his nostrils extended—indeed, his countenance partook more of the negro than of the Arab type. His feet were enormous, with toes widely spread. ... — The Three Commanders • W.H.G. Kingston