| solanum | <botany> A genus of plants comprehending the potato (S. Tuberosum), the eggplant (S. Melongena, and several hundred other species; nightshade. Origin: L, nightshade. Source: Websters Dictionary (01 Mar 1998) |
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| catechu nigrum | Black catechu, an extract of the heart wood of Acacia catechu (family Leguminosae), used as an astringent in diarrhoea. Synonym: cutch. (05 Mar 2000) |
| pigmentum nigrum | Melanin of the choroid coat of the eye. (05 Mar 2000) |
| tapetum nigrum | The outer layer of the retina, consisting of pigmented epithelium. Synonym: ectoretina, stratum pigmenti bulbi, stratum pigmenti retinae, tapetum nigrum, tapetum oculi. (05 Mar 2000) |