entries → 鈕扣
TSUMUGU · B2 · 詞
鈕扣 word · B2
鈕扣 ＝ 鈕 ＋ 扣
ㄋㄧㄡˇ ㄎㄡˋ · niǔkòu
noun — button (on clothing)

字源 FORM — what the parts do

鈕knob, button (按鈕)niǔ
扣fasten, buckle (扣子)kòu
鈕扣，按鈕的鈕，扣子的扣。