expression, ichidan verb
excel in one thing; be a master of one art
Used when someone has a single outstanding skill or talent, often in contrast to being average in other areas. The phrase carries a positive nuance of specialized excellence.
彼は学業は普通だが、一芸に秀でている。
He is average in his studies, but he excels in one particular skill.
一芸に秀
Excelling in one thing can sometimes be an advantage in job hunting.