This is the 1767th most frequent Japanese word.
一角
"Corner," "section," or "part."
In this sentence, 一角 is used metaphorically to mean 'a notable member part of something larger', highlighting the person's distinguished status.
彼は一角の偉大な人物として知られている。
He is known as a great figure of distinction.
Here, 一角 refers to a physical corner or section, indicating a specific part within a larger space.
絵画には、美しい庭の一角が描かれている。
The painting depicts a beautiful corner of the garden.
In this usage, 一角 is part of 一角獣, which literally means 'one horn beast', referring to a unicorn.