Found 2 items, similar to mossback.
English → English (WordNet) Definition: mossback mossback n : an extremely old-fashioned conservative
English → English (gcide) Definition: Mossback Mossback \Moss"back`\, n. A veteran partisan; one who is so conservative in opinion that he may be likened to a stone or old tree covered with moss. [Political Slang, U.S.] [1913 Webster]