| a fool or simpleton; ninny. |
| a chattering or flighty, light-headed person. |
| blind spot | |
| —n | |
| 1. | See optic disc a small oval-shaped area of the retina in which vision is not experienced. It marks the nonphotosensitive site of entrance into the eyeball of the optic nerve |
| 2. | a place or area, as in an auditorium or part of a road, where vision is completely or partially obscured or hearing is difficult or impossible |
| 3. | a subject about which a person is ignorant or prejudiced, or an occupation in which he or she is inefficient |
| 4. | a location within the normal range of a radio transmitter with weak reception |
blind spot n.
See optic disk.
The area of blindness in the visual field corresponding to the optic disk. Also called physiologic scotoma, punctum cecum.
An area or facet of one's personality of which one remains ignorant or fails to gain understanding. Also called mental scotoma, scotoma.
| blind spot (blīnd) Pronunciation Key
The small region of the retina where fibers of the optic nerve emerge from the eyeball. The blind spot has no rods or cones, so no light or visual image can be transmitted. |
A small region in the visual field (the area scanned by the eye) that cannot be seen. The blind spot corresponds to an area in the eye where the optic nerve enters the retina.
Note: In a general sense, the term is used to refer to an inability to see things that might be obvious to another observer: “He has a blind spot as far as his daughter's behavior is concerned.”