Definition of sickness:
disease (part of speech: noun)
- unhealthiness (part of speech: noun)
- "An Address Delivered At The Interment Of Mrs. Harriet Storrs, Consort Of Rev. Richard S. Storrs, Braintree, Mass. July 11, 1834.", John Codman.
- "Bat Wing", Sax Rohmer.
- "Dorothy Dale", Margaret Penrose.