From Psychology Wiki

Insight:

• An outward directed perception of that which is not apparent - the act or result of apprehending the inner nature of things or of seeing intuitively or Induction.

• An outward directed understanding of that which is apparent through logical processes- Power of acute observation and deduction.

• An inward directed perception - introspection or self-awareness, self-understanding as in Self-perception theory

• A feature or problem solving behavior distinguished from other kinds by insight phenomenology

• Insight in psychotherapy

• In Buddhism, the Pali word for "insight" is "vipassana"