钮扣

Traditional form:

鈕釦

Pinyin (reading):

niǔkòu

Definitions:

• variant of 紐扣／纽扣 (niǔkòu)

Characters:

• 钮 - button, knob; surname
• 扣 - to detain; to knock, to tap; button

Traditional characters:

• 鈕 - button, knob; surname
• 釦 - button; buckle, clasp; to engrave