I. ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: swing (III) + back, n.
1. : a pivoting back for some cameras that allows the film or plateholder to be tilted for correcting or distorting the perspective in a photograph or for shifting the focal plane so as to bring oblique objects into focus
2. : swayback of lambs
II. noun
( -s )
Etymology: from the phrase swing back, from swing (I) + back, adverb
: a movement of reaction (as a return to favor or influence of a political party)