(fishing) Synonym of mossyback (“a fish that is large and old, especially one that has algae growing on its back”)
(informal) Synonym of mossyback (“a person with old-fashioned views; hence, one who is very conservative or reactionary”)
(informal, historical) A person who stayed hidden to evade conscription (especially by the Confederate States Army) during the American Civil War (1861–1865); a mossyback.
A turtle that, because of its age, has a growth of algae on its back
The common snapping turtle (Chelydra serpentina).
The largemouth bass or moss bass (Micropterus salmoides).