The kanji 底 primarily means "bottom," "base," or "foundation." It refers to the lowest part of something, the supporting structure, or the point furthest down. It can also imply the end or the limit of something.

・On-yomi (音読み): テイ tei ・Kun-yomi (訓読み): そこ soko

⚫︎ 底底の浅い鍋 Translation: a shallow pot. ⚫︎ 海底 Translation: seabed. ⚫︎ 大底 Translation: The bottom (in economics or a similar context).

The kanji 底 is a phono-semantic compound (形声文字 けいせいもじ keiseimoji). The semantic component is 广 まだれmadare meaning "cliff" or "shelter," and the phonetic component is 氐ていtei indicating sound and suggesting the meaning of "base." The character originally depicted the bottom of a shelter or a cliff face. Over time, its meaning expanded to encompass the general concept of "bottom" or "base."