Black Dot

An early transillumination finding in the scrotum in patients with torsion of the testicular appendix—a normal persistent embryologic remnant; the black dot may be seen before major edema appears
References in classic literature ?
All that could be seen of him was a very small black dot moving swiftly on the blue surface of the water, a little black dot which now and then lifted a leg or an arm in the air.
Far away, a black dot, we could see a vehicle moving in our direction.
Toward evening of the second day they reached a sandy plain where walking was difficult; but some distance before them they saw a group of palm trees, with many curious black dots under them; so they trudged bravely on to reach that place by dark and spend the night under the shelter of the trees.
The black dots grew larger as they advanced and although the light was dim Dorothy thought they looked like big kettles turned upside down.
Her gray felt hat had a white feather on it, and a white tissue veil with large black dots made her delicate skin look brilliant.
He had a large watchchain, and strong black dots where his beard and whiskers would have been if he had let them.
Then I seemed to see a row of black dots appear along that ridge -- human heads?
Only disappears when you close sleepy eyes, But it bloody comes back in its black dot disguise.
After a year when other varieties have succumbed to black leg and black dot, Saphire, with its big strong canopy and resistance to both diseases, is also expected to grow its share of the table potato market.
During a six-hour journey in which the planet passed directly between Earth and the sun, Venus appeared as an inky black dot in silhouette against the looming solar disk.
During the pass, Venus took the form of a small black dot slowly shifting across the northern hemisphere of the Sun.
However it is just possible to see the Venus without optical magnification like a tiny black dot over the Sun disk as it crosses the Sun (but using solar filter protection).