The word bardo literally
means "an interval
between two things". 'Bar' means 'interval' and 'do' means 'two'.
We can think of this interval in a spatial
way. If there are two houses, the space
between them is a bardo. The period
, the interval of daylight
, is a bardo. A bardo can be of long or short duration, of wide or narrow expanse.
The bardos as encountered in the Tibetan Book of the Dead describe the passings between various stages of consciousness, e.g. falling asleep and waking up, going in and out of a trance during meditation, and of course dying - the passing from life to death.