The kanji 錘 (sui) primarily means "weight," "sinker," or "plumb bob." It refers to something heavy used for weighing or measuring, or something that sinks. It also metaphorically suggests something that is important or weighty.

・On-yomi (音読み): スイ (sui) ・Kun-yomi (訓読み): おもり (omori) - weight, sinker

⚫︎ 錘を落とす Translation: To drop a weight/sinker. ⚫︎ 錘形 Translation: Spindle-shaped. ⚫︎ 釣りの錘 Translation: Fishing weight/sinker.

The kanji 錘 is a phono-semantic compound (形声文字, keisei moji). It is composed of the radical 金 (kan/kin), meaning "metal" or "gold," and the phonetic component 垂 (sui), which conveys the sound and provides a hint of meaning related to something hanging down. The combination suggests a metal object that hangs or dangles, implying a weight or plumb bob.