The kanji 汐 primarily represents "tide" or "evening tide." It refers to the movement of water caused by the gravitational forces of the moon and sun, and often specifically denotes the rising or coming in of the tide, particularly in the evening.

・On-yomi (音読み): セキ (seki) ・Kun-yomi (訓読み): しお (shio) - meaning "tide"

⚫︎ 夕汐 Translation: Evening tide ⚫︎ 汐入 Translation: Entering tide (often used in place names, e.g., Shioiri Station) ⚫︎ 汐時 Translation: Tide time, high tide

The kanji 汐 is a phono-semantic compound. It combines two components: ⚫︎ The left side is 氵 (also written as 水 - mizu), which is the water radical (meaning "water"). ⚫︎ The right side is 夕 (yū, evening), which functions phonetically here, indicating the sound and suggesting the time associated with the tide, particularly the evening. Therefore, 汐 was created to visually represent the concept of water (氵) associated with the evening (夕), and specifically the time when the tide is most noticeable or comes in.