帘子
lián zi · HSK 7
curtain
🪟 帘 = 穴 opening over 巾 cloth: a cloth hung across a doorway or window; 子 is a noun suffix
The character 帘 stacks 穴 (opening, as in a cave mouth or window) on top of 巾 (cloth or towel), so the cloth covering an opening is a curtain. The 子 (zi) ending is just a neutral-tone noun suffix, like the -let in trinket.
子 — pictograph of a baby/child with arms out
子 began as a pictograph of a swaddled infant with a large head and outstretched arms, originally meaning 'baby' or 'child.' From there it broadened to 'son,' 'offspring,' and a respectful suffix for masters like 孔子 (Confucius). It also became one of the twelve earthly branches.