Noah Webster's 1828 American Dictionary of the English Language is regarded by many as the finest English
dictionary ever published. The dictionary is available in many forms. I made the content available here for my own purposes,
out of personal admiration for this particular dictionary.
BACK'ED, pp. Mounted; having on the back; supported by aid; seconded; moved backward. BACK'ED, a. Having a back; a word used in composition; as broad-backed, hump-backed.
backed appears in definitions for these words: BackUnbacked