Blinker
Blinker ({not transcribed}) , noun
1.
One who, or that which, blinks.
2.
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.
A kind of goggles, used to protect the eyes form glare, etc.