An AI controlled monster. ?Mob? originally comes from the MUD era, where it was short for ?mobile?, to differentiate monsters that would patrol a set of rooms as opposed to monsters which would stay in one place until killed.
This shorthand word actually has two definitions, both of which refer to the same thing. The original definition of this word came from old role-playing systems, meaning "Mobile" or "Mobile Object." A mobile is a non-player controlled creature/being that operates and moves independent of the player. The more modern definition of this word is an acronym for "Monster or Beast." This also refers to a monster or creature that is not controlled by a player. If someone says, "the MOB moves out of range," they mean that the monster (wolf, for example) has moved out of the player's attack range.
an ver oard A feature of GPS, LORAN-C and other electronic navigation receivers which stores the current position at a press of the MOB button. This enables the vessel to be steered back to the original position. It is intended to assist in the retrieval of a crew member who has fallen overboard.
mo vable ob ject is a graphical object that is manipulated separately from the background. These are seen all the time in computer games. When implemented in hardware, MOBs are sometimes called sprites.