"macula" in the noun sense
1. sunspot, macula
a cooler darker spot appearing periodically on the sun's photosphere associated with a strong magnetic field
2. macula, macula lutea, macular area, yellow spot
a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision
3. macule, macula
a patch of skin that is discolored but not usually elevated caused by various diseases
Source: WordNet® (An amazing lexical database of English)
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