Evidence  —n. 1 (often foll. By for, of) available facts, circumstances, etc. Indicating whether or not a thing is true or valid. 2 law a information tending to prove a fact or proposition. B statements or proofs admissible as testimony in a lawcourt. —v. (-cing) be evidence of.  in evidence conspicuous. Queen's (or king's or state's) evidence law evidence for the prosecution given by a participant in the crime at issue. [latin video see]