nightshade (n.)youdaoicibaDictYouDict[nightshade 词源字典]
Old English nihtscada, literally "shade of night," perhaps in allusion to the poisonous berries. A common Germanic compound, cognates: Dutch nachtschade, German Nachtschatten.[nightshade etymology, nightshade origin, 英语词源]
nightspot (n.)youdaoicibaDictYouDict
also night spot, "nightclub," 1936, from night (n.) + spot (n.) "place."
nightstick (n.)youdaoicibaDictYouDict
also night-stick, 1887, from night + stick (n.). So called because it was carried on night patrols.