DCHP-1 Online
mossback Slang 
n. an oldtimer, often one having unprogressive, old-fashioned ideas.
- 1884 The local mossback refers to the recent picking up of stones on Stephen Avenue, and the piling of the same in the middle of the avenue.
- 1959 Many evenings at the mission I listened to old mossbacks, prospectors, and trappers unfold the scroll of their experiences.
- 1963 He is not, however, a member of the mossback rump in the Liberal caucus, a group led by Yvon Dupuis, MP for Sain-Jean. . . .
- 1884 The local mossback refers to the recent picking up of stones on Stephen Avenue, and the piling of the same in the middle of the avenue.