expression, noun
someone of importance; a person of some standing
Used to describe a person who has achieved a certain level of recognition or status in a field. Often implies they are not the top but still notable.
彼は業界では一角の人物として知られている。
He is known as a person of some importance in the industry.
彼女も今では一角の人物だ。
She is now a person of some standing herself.
The phrase combines 一角 (ひとかど, 'one corner') with 人物 (じんぶつ, 'person'). 一角 here figuratively means 'a certain degree' or 'a respectable position', so the whole phrase means 'a person of some standing'. The exact origin of this figurative use is uncertain.