The term "second fiddle" is often used figuratively to refer to someone who is playing a supporting role to someone else, or who is not as important as someone else. For example, someone might say that they are "playing second fiddle" to their boss at work, or that their spouse is "always playing second fiddle" to them.
The term "second fiddle" can also be used in a more positive way, to refer to someone who is content with their supporting role and who is happy to contribute to the success of others. For example, someone might say that they are "happy to play second fiddle" to their more talented friends, or that they are "honored to play second fiddle" to their mentor.
No matter how it is used, the term "second fiddle" is a reminder that there is more than one way to contribute to a group or team. Everyone has a role to play, and even those who are not in the spotlight can make a big difference.