Main Entry: blind spot

Function: noun

Date: 1872

1 a : the small circular area at the back of the retina where the optic nerve enters the eyeball and which is devoid of rods and cones and is not sensitive to light —called also optic disk — see eye illustration b : a portion of a field that cannot be seen or inspected with available equipment
2 : an area in which one fails to exercise judgment or discrimination