懂中文 Dong Chinese

鈕

niǔ

button

Phonosemantic compound. 釒 represents the meaning and 丑 represents the sound.

Components
釒 meaning component

釒  Meaning component

jīn

  

metal

釒 is a component form of 金.

丑 sound component

丑  Sound component

chǒu

  

second earthly branch; (simp.) ugly

Evolution

鈕 Seal script Chu (Warring States: 475-221 BC)

Seal script

Chu (Warring States: 475-221 BC)
鈕 Seal script Shuowen (~100 AD)

Seal script

Shuowen (~100 AD)
鈕 Seal script Shuowen (~100 AD)

Seal script

Shuowen (~100 AD)
鈕 Clerical script Western Jin dynasty (266-316 AD)

Clerical script

Western Jin dynasty (266-316 AD)
鈕 Regular script Modern

Regular script

Modern
Definitions

钮 (鈕) 

niǔ

button, knob; surname; button

钮 (鈕) 

Niǔ

surname Niu

Most common words with 鈕
Freq.
Word
Meaning

按钮

push button

钮

surname Niu

钮扣

button

旋钮

knob (e.g. handle or radio button)

电钮

push button (electric switch)