What is Cognisance?

Cognisance definition and meaning on Dictionary terms:
awareness, realization, or knowledge; notice; perception: The guests took cognizance of the snide remark.
Law. judicial notice as taken by a court in dealing with a cause. the right of taking jurisdiction, as possessed by a court. acknowledgment; admission, as a plea admitting the fact alleged in the declaration.

the range or scope of knowledge, observation, etc.: Such understanding is beyond his cognizance.
Heraldry. a device by which a person or a person’s servants or property can be recognized; badge.