A model or type of machinery or device which precedes the current (or later) one. Usually used to describe an earlier, outdated model.
One who precedes; one who has preceded another in any state, position, office, etc.; one whom another follows or comes after, in any office or position.
A vertex having a directed path to another vertex
A clairvoyant or clairaudient experience, such as a dream, which resonates with some event in the future.
A strong intuition that something is about to happen (usually something negative, but not exclusively).