The kanji 砂 primarily represents "sand". It refers to the loose, granular material resulting from the disintegration of rocks, composed of small particles of minerals. It can also figuratively represent a small quantity or something easily dispersed.

・On-yomi (音読み): サ (sa) ・Kun-yomi (訓読み): すな (suna)

⚫︎砂砂漠 Translation: desert ⚫︎砂砂浜 Translation: sandy beach ⚫︎砂砂時計 Translation: hourglass

The kanji 砂 is a phono-semantic compound (形声文字). The left side is the radical 石 (stone/rock) and the right side is 少 (small/few). This composition suggests the meaning: small pieces of rock or stones, which constitutes sand.