This is the 9289th most frequent Japanese word.
登輝
"登輝" (Tōki) is a Japanese given name meaning "ascending glory" or "rising brilliance."
In this sentence, 登輝 is used as a proper noun (a name).
登輝さんは今日の会議に参加しました。
Mr. Tokui attended today's meeting.
Here, 登輝 is used metaphorically to express reaching a goal or achievement (climbing and shining).
彼は山の頂上へ登輝を果たした。
He accomplished climbing to the mountain's summit.
In this sentence, 登輝 signifies gaining recognition or making a notable achievement.