noun
major mark; threshold; milestone
Used for a significant round-number level or psychological barrier, especially in statistics, economics, or sports. Often appears with numbers like 100, 1000, 1万, etc.
日経平均株価が4万円の大台を突破した。
The Nikkei stock average broke through the 40,000-yen mark.
彼の年収がついに1000万円の大台に乗った。
His annual income finally reached the 10-million-yen level.
noun
100-yen unit (stock market)
Finance-specific term: a unit of 100 yen used in stock pricing on the Tokyo Stock Exchange. A stock priced at 500 yen is said to be at the 5-大台 level.
この銘柄は5大台で推移している。
This stock is trading in the 500-yen range.