A term of indefinite meaning, often used to provide emphasis, esp. in such phrases as beat (or scare) the bejesus out ofbeat the bejesus out ofscare the bejesus out of.
Used as an intensive.
The bear scared the bejesus out of us.
The definition of bejesus is a word to use instead of "Jesus" to express surprise, anger or other negative feelings.
An example of a time when someone might shout "Bejesus" is when she sees that her spouse made a mess of the kitchen.
Used variously to express surprise, pleasure, anger, annoyance, etc.