Ten Thousand Dream Interpretation
by Gustavus Hindman Miller
To see a cuspidor in a dream, signifies that an unworthy attachment will be formed by you, and that your work will be neglected.
To spit in one, foretells that reflections wil{sic} be cast upon your conduct.
The Complete Dream Book
by Gillian Holloway
Failure to succeed in a pet project is predicted if you try to spit into a cuspidor and miss, Any dream of using a cuspidor foretells disappointment.