(Latin plural genera), 1550s as a term of logic, "kind or class of things" (biological sense dates from c. 1600), from Latin genus (genitive generis) "race, stock, kind; family, birth, descent, origin" (from suffixed form of PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups).
"plant of the genus solanum," with white flowers and black poisonous berries, Middle English night-shade, from Old English nihtscada, literally "shade of night," perhaps in allusion to the berries; see night + shade (n.). A common Germanic compound, cognates: Dutch nachtschade, German Nachtschatten.
"cartilaginous fish resembling or related to a shark of the genus selachii," 1835; the genus name from Latinized form of Greek selakhos (plural selakhē) "cartilaginous fish," which is of uncertain origin.
"fruit of the eggplant" (Solanum esculentum), 1775, from French aubergine, from Catalan alberginera (showing typical change of al- to au- in French), from Arabic al-badinjan "the eggplant" (source also of Spanish alberengena, 15c.), from Persian badin-gan, from Sanskrit vatigagama. The plant, native to Southeast Asia, was unknown to the ancients and introduced to the Mediterranean by the Arabs. As the name of a color like that of the eggplant fruit, it is attested from 1895.
genus of fungi, Modern Latin, from Greek pilos "felt" (see pileated) + bōlos "a clod, clump."
"Australian duck-mole," 1799, from Modern Latin, from Greek platypous, literally "flat-footed," from platys "broad, flat" (from PIE root *plat- "to spread") + pous "foot," from PIE root *ped- "foot." Originally the genus name, but entomologists had given it earlier to a genus of beetles; it was retained for the species after the genus name was changed in 1800 to Ornithorhyncus. OED has Australian platypussary (1945) "enclosure in which platypuses are kept."