英和和英

at the pressing of a button

to press a button

to press the button

undo the buttons of

sew a button on

sew the button down

to sew a button on

fasten with buttons

press a button

fasten buttons

to fasten one's coat with buttons―button one's coat

provide with buttons

push the button down

to sew on a button

to push something up gradually

to sew on a button

press down

to undo a button―unbutton one's coat

to undo a button―（上衣のボタンなら）―unbutton one's coat

A button comes off.

down below

the lower end portion of something

A button comes undone

the bottom drawer

down of the swan

the lower lip

below deck

the column below

to bring something in an elevated position to a lower position

to condescend―humble oneself