The word "rewinded" appears in our manual and in a comment. That sounds strange to my ears. Isn't it a mistake? Oxford lists the form as "poetic" and "rare", and then says it was used by one specific Victorian poet. Perhaps I'll send them a pull request: it's now G. M. Hopkins and PostgreSQL? Or maybe it's in common usage in another part of the world?
To me this sounds like a classic non-English-native-speaker-mistake. But it seems at least the one in the docs come from Bruce, who definitely is... So perhaps it's intentional to refer to "what pg_rewind does", and not necessarily to the regular word for it?