igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt; "volcanic rock includes the volcanic glass obsidian"
explosively unstable; "a volcanic temper"
relating to or produced by or consisting of volcanoes; "volcanic steam"; "volcanic islands such as Iceland"; "a volcanic cone is a conical mountain or hill built up of material from volcanic eruptions"
(Greek mythology) 7 daughters of Atlas and half-sisters of the Pleiades; they nurtured the infant Dionysus and Zeus placed them among the stars as a reward
not tractable; difficult to manage or mold; "an intractable disposition"; "intractable pain"; "the most intractable issue of our era"; "intractable metal"
violently agitated and turbulent; "boisterous winds and waves"; "the fierce thunders roar me their music"- Ezra Pound; "rough weather"; "rough seas"
noisy and lacking in restraint or discipline; "a boisterous crowd"; "a social gathering that became rambunctious and out of hand"; "a robustious group of teenagers"; "beneath the rumbustious surface of his paintings is sympathy for the vulnerability of ordinary human beings"; "an unruly class"
full of rough and exuberant animal spirits; "boisterous practical jokes"; "knockabout comedy"