Definition:
A "vertical fin" is a part of an airplane's tail. It is shaped like a vertical (upright) plane and helps to keep the airplane stable while it is flying. Think of it like a tall, upright wall at the back of the plane that helps it stay balanced.
In more advanced discussions, you might discuss the design and engineering aspects of the vertical fin, such as its aerodynamic properties or its role in flight stability.
While "vertical fin" does not have specific idioms or phrasal verbs, you can find phrases related to stability and direction, such as: - "On the right track" – This means you are doing something correctly or following the correct course, similar to how a vertical fin keeps an airplane on its flight path.
Understanding the term "vertical fin" is essential for anyone interested in aviation.