A triplane, also known as a triple-decker plane, is a three-winged aircraft that gained popularity during World War I. However, there are a few other synonyms for triplane that could describe this unique airplane. The first is a triple-winged plane, which accurately describes the structure of the aircraft. Another synonym is a three-tiered plane, which highlights the plane's unique design of one wing stacked on top of another. Some aviation enthusiasts may also refer to a triplane as a three-winged flyer, emphasizing the aircraft's ability to soar through the skies with three sets of wings. Regardless of what you call it, a triplane remains an impressive sight to see.