What does 首位 mean?
首位 is a Japanese noun meaning “first place; head position; leading position” in English. It is written as 首位 in kanji, しゅい in hiragana, and shui in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
阪神三日天下。あっと言う間に首位から転落しちゃったよ。
Hanshin's moment of glory didn't last. They fell out of first place in a hurry.