gavel
🇺🇸
/ˈɡævl/
🇬🇧
/ˈɡævl/
A small hammer that is used by someone who is leading a meeting or an auction, or by a judge in court, to get people's attention.
The judge used the gavel to signal the start of the court session.
裁判官はハンマーを使い、裁判の開始を合図しました。