按钮

按钮	àn niǔ	to push a button / button (one that can be pressed to trigger an action)
按	àn	to press / to push / to leave aside or shelve / to control / to restrain / to keep one's hand on / to check or refer to / according to / in the light of / (of an editor or author) to make a comment
钮	Niǔ	surname Niu
钮	niǔ	button