ダブルボタンの英語

to press a button

to sew on a button

A button has come off.

a button on a coat

to undo a button―unbutton one's coat

A button comes undone―（靴のボタンなら）―A shoe comes unbuttoned.

to finger a button―fumble a button

fasten buttons

A button fell off.

Click the button

a buttonhole

A button has come off

a button for forward track skipping

A button comes off.

to fasten a coat with buttons―button up a coat

undo the buttons of

A button comes undone

A button is off.

a hole through which buttons are pushed

fasten with buttons

a button‐hole stitch

the buttons on a coat

button one's blouse

cuff-studs―sleeve-links

Your second button is coming off.

Please press the both buttons simultaneously.

shaped like a button

a lock called {button lock}

to finger a button

studs