Insight or understanding ("to have a clue [about]" or "to have clue". See have a clue, clue stick)
Information which may lead one to a certain point or conclusion.
An object or a kind of indication which may be used as evidence.
To provide with a clue.
To provide someone with information which he or she lacks (often used with "in" or "up").
Used other than figuratively or idiomatically: see prior, knowledge.
Knowledge of a set of circumstances sufficient to make actions based on those circumstances wrongful.
Prior to the inception of an insurance policy, knowledge of specific extant circumstances that could reasonably give rise to a claim under that policy.