The kanji 笹 primarily represents "bamboo grass" or "bamboo leaves." It specifically refers to the smaller, more delicate bamboo species, often used as a decorative plant.

・On-yomi (音読み): satsu (not commonly used) ・Kun-yomi (訓読み): 笹（ささ） sasa

⚫︎笹の葉（ささのは） Translation: bamboo grass leaves ⚫︎笹飾り（さざかざり） Translation: bamboo grass decoration ⚫︎笹団子（ささだんご） Translation: a type of Japanese sweet, usually mochi wrapped in bamboo grass leaves

The kanji 笹 is a phono-semantic compound (形声文字). The left side is the radical "艹" (くさかんむり), which signifies "grass" or "plants." The right side is a phonetic component, representing the sound "satsu" (although this reading is not very common in modern Japanese). The combination of the radical and phonetic component suggests the meaning: "a type of grass or plant with the sound of satsu." Over time, it came to specifically represent the type of bamboo grass, 笹.