To retreat.
Used other than figuratively or idiomatically: see fall, back.
To fail to fulfill a promise or purpose.
To move backwards to an earlier stage; to devolve.
To move from east to west.
To perform a regression on an explanatory variable.
To interrogate a person in a state of trance about forgotten elements of their past.
The act of passing back; passage back; return; retrogression.
In property law, the right of a person (such as a lessee) to return to a property.
The power or liberty of passing back.