A piece of evidence is any type of material that can be used to prove or disprove a FACT in a court of law. The crossword solutions for this term are SHRED (5 letters), CLUE (4 letters), and FACT (4 letters). SHRED refers to the destruction of documents, which is often done to prevent them from being used as evidence. CLUE is an indication or hint that can help lead to the discovery of evidence. FACT is a truth or reality that can be used as evidence.