traskite

from The Century Dictionary.

• noun An early name of the Seventh-Day Baptists, from John Trask, one of their leaders in England in the seventeenth century. See Baptist.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun mineralogy A hexagonal-ditrigonal dipyramidal brownish red mineral containing aluminum, barium, calcium, chlorine, fluorine, hydrogen, iron, magnesium, manganese, oxygen, silicon, strontium, and titanium.