Someone who figures out how much something will cost or take to do.
The estimator gave us an idea of how much the repairs would cost.
見積もり士が修理費用の見積もりを教えてくれました。
A thing that helps measure or guess amounts, like distance or time.
The scientist used an estimator to guess how fast the water was flowing.
科学者は見積もり士を使って水の流速を推測しました。