Orpiment, a yellow pigment made from arsenic. (Definition)
From "The Song of Diego Valdez":
But I remember comrades–
Old playmates on new seas–
Whenas we traded orpiment
Among the savages–
A thousand leagues to south’ard
And thirty years removed–
They knew not noble Valdez,
But me they knew and loved.
I don’t think I’ll get to use this in conversation often, though.
