S: (n) spot, speckle, dapple, patch, fleck, maculation (a small contrasting part of something) "a bald spot"; "a leopard's spots"; "a patch of clouds"; "patches of thin ice"; "a fleck of red"
S: (n) speck, pinpoint (a very small spot) "the plane was just a speck in the sky"
S: (n) nebula ((pathology) a faint cloudy spot on the cornea)
S: (n) splash (a patch of bright color) "her red hat gave her outfit a splash of color"
S: (n) plaque ((pathology) a small abnormal patch on or inside the body)
S: (n) macule, macula (a patch of skin that is discolored but not usually elevated; caused by various diseases)
S: (n) parhelion, mock sun, sundog (a bright spot on the parhelic circle; caused by diffraction by ice crystals) "two or more parhelia are usually seen at once"
S: (n) sunspot, macula (a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field)
S: (n) facula, solar facula (a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots)