- acquaintance with facts, truths, or principles, as from study or investigation; general erudition: knowledge of many things.
- acquaintance or familiarity gained by sight, experience, or report: a knowledge of human nature.
- the fact or state of knowing; the perception of fact or truth; clear and certain mental apprehension.
Dictionary.com. 2012 "Knowledge." Available at http://dictionary.reference.com/browse/knowledge.