A huge/enormous sum (especially of money); a massive amount.
その会社は巨額の損失を発表した。
The company announced massive losses.
巨額の投資がプロジェクトに注がれた。
Huge investment was poured into the project.
彼は巨額の借金を抱えていると報じられた。
It was reported that he had incurred enormous debts.