A collective or independant entity, object or creature; one that usually cannot be moved or altered without another collective or strong force to combat it. Suggestive of a giant structure, perhaps made of several smaller pieces. Anonymity does not have to be a factor.
The term Gigalith is generally, though not often generously applied to corporations, celebrities, and/or objects or application of a cult or underground status. E.g. Microsoft, Steven Spielberg, ABC, Uwe Boll, the government, Hollywood, Paris Hilton, Wal-Mart, etc.