칫솔
chitsol · TOPIK 1
toothbrush
🪥🦷 칫솔 = 치 (tooth, 齒) + ㅅ + 솔 (brush): tooth's brush
치 is the Sino-Korean reading of 齒 (tooth), as in 치과 (dentist) and 치약 (toothpaste). 솔 is the native Korean word for brush. The ㅅ under 치 is the linking sound (사이시옷) that glues the two nouns together.