穿
chuān · HSK 1
to wear
👕 穿 = 牙 (tooth) under 穴 (cave) — teeth bore through, hence to pierce or thread on
Original sense is to bore or pierce through (a wall, a hole). Threading clothes onto the body extends that meaning to wearing. Same verb covers both: 穿衣服 wear clothes, 穿孔 bore a hole.
穿 — cave 穴 on top + tooth 牙 below
Originally a compound suggesting a tooth (牙) boring through a cave or hole (穴), giving the core sense of 'pierce through' or 'penetrate'. From this came extended meanings like 'pass through', 'wear (clothes)' — i.e. pass the body through fabric — and 'bore a hole'.