Emily Dickinson Lexicon

PECH'BLEND, n. [G. pech, pitch, and blende, blend.]

Pitchblend, an ore of uranium; a metallic substance found in masses, or stratified with earths or with other minerals, in Swedish and Saxon mines. It is of a blackish color, inclining to a deep steel gray, and one kind has a mixture of spots of red. – Nicholson.