An idea that engenders a compulsive or irrational preoccupation, or the preoccupation thereby engendered.
The quality of being obsessed.
Influence or control by evil spirits without possession.
An activity or entity that inspires a compulsive and potentially unhealthy fixation, or the fixation thereby inspired.
The tendency to focus one's attention on one specific idea or viewpoint, to the exclusion of everything else.
A restricted field of vision as the result of looking through some type of object or a medical condition.