Saliva colored brown by tobacco (snuff or chewing tobacco)(noun)
WordNet. Princeton University. 2010.
Use "tobacco juice" in a sentence
"Then one of the wretches – Bill himself – leaned over the posterate man an 'squirted tobacco juice in his eyes."
"They were coarse, massive women, and expectorated tobacco juice about on the floor in a manner more skillful than charming."
"Because just about every last man, without breaking stride, aimed a shot of thick brown tobacco juice at one of the several dozen cuspidors scattered around the big floor."