adj. Pertaining to the order Solanaceae, which includes the nightshades.
the GNU version of the Collaborative International Dictionary of English
adj. Of or pertaining to plants of the natural order Solanaceæ, of which the nightshade (Solanum) is the type. The order includes also the tobacco, ground cherry, tomato, eggplant, red pepper, and many more.
The Century Dictionary and Cyclopedia
Belonging to the Solanaceæ.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. of or relating to plants of the family Solanaceae (the potato family)
Word Usage
"Our invaluable Potato, which enters so largely into the dietary of all classes, belongs to the Nightshade tribe of [442] dangerous plants, though termed "solanaceous" as a natural order because of the sedative properties which its several genera exercise to lull pain."