Wiktionary (0.00 / 0 votes) Rate this definition: test (Noun). A challenge. test (Noun). An examination, given often during the academic term. test (Noun). A session in which a product or piece of equipment is examined under everyday or extreme conditions to evaluate its durability, etc.test (Noun). A Test match.iktionary (0.00 / 0 votes) Rate this definition: test (Noun). A challenge. test (Noun). An examination, given often during the academic term. test (Noun). A session in which a product or piece of equipment is examined under everyday or extreme conditions to evaluate its durability, etc. test (Noun).