THISTLE n.
See under Globe, Melon, etc. -- Pine thistle, Atractylis gummifera, a native of the Mediterranean region. A vicid gum resin flows from the involucre. -- Scotch thistle, either the cotton thistle, or the musk thistle, or the spear thistle; -- all used national emblems of Scotland. -- Sow thistle, Sonchus oleraceus.…
TRUFFLE n.
Any one of several kinds of roundish, subterranean fungi, usually of a blackish color. The French truffle (Tuber melanosporum) and the English truffle (T. æstivum) are much esteemed as articles of food. Truffle worm (Zoöl.), the larva of a fly of the genus Leiodes, injurious to truffles. Truffle pig, a pig used for fin…
UMBRA n.
y one of several species of sciænoid food fishes of the genus Umbrina, especially the Mediterranean species (U. cirrhosa), which is highly esteemed as a market fish; -- called also ombre, and umbrine. Umbra tree (Bot.), a tree (Phytolacca diocia) of the same genus as pokeweed. It is native of South America, but is now…
VOLCANIC a.
built up of cinders, tufa, or lava, during volcanic eruptions. -- Volcanic foci, the subterranean centers of volcanic action; the points beneath volcanoes where the causes producing volcanic phenomena are most active. -- Volcanic glass, the vitreous form of lava, produced by sudden cooling; obsidian. See Obsidian.…