Find a new path or method; begin a new undertaking. For example, His research blazed a trail for new kinds of gene therapy. This expression was first used literally in the 18th century for the practice of marking a forest trail by making blazes, that is, marking trees with notches or chips in the bark. [

idiom. to do something that has never been done before: Le Corbusier blazed a trail in architecture. SMART Vocabulary: related words and phrases.