What does "sixth sense" mean?

Extrasensory perception; the ability to sense things by means other than the known bodily senses.

Sixth sense

Common synonyms include: a priori knowledge, anticipation, apercu, buddhi, chromesthesia, clairsentience.

noun

noun ·Rare ·Advanced level

Noun

1
Extrasensory perception; the ability to sense things by means other than the known bodily senses.
"Among themselves they communicate by means of what Perry says must be a sixth sense which is cognizant of a fourth dimension."
2
grasping the inner nature of things intuitively wordnet

"Among themselves they communicate by means of what Perry says must be a sixth sense which is cognizant of a fourth dimension."

Adding to the traditional five senses of touch, taste, smell, sight, and hearing.