button

1 button /ˈbʌtn̩/ noun
plural buttons
1 button
/ˈbʌtn̩/
noun
plural buttons
Britannica Dictionary definition of BUTTON
[count]
1 
: a small, usually round piece of plastic, glass, metal, etc., that is sewn to a piece of clothing and is pushed through a loop or hole to fasten one part of the clothing to another part
— see color picture on this page
2 
US : a small, usually round sign that has a picture or words on the front and a pin on the back
◊ People pin buttons to their clothing to show support for a person or idea.
— called also (British) badge
3 
a  : a small part of a machine that you push to make the machine work
b  : a small area on a computer screen that you click on to make the computer software do something
— see also hot button

(as) cute as a button

informal

on the button

US, informal
1 
: exactly at the specified time
2 
: perfectly accurate

push the right buttons

informal
: to do the things that are needed to produce a desired effect or result

push your buttons

informal
: to do or say something just to make you angry or upset
2 button /ˈbʌtn̩/ verb
buttons; buttoned; buttoning
2 button
/ˈbʌtn̩/
verb
buttons; buttoned; buttoning
Britannica Dictionary definition of BUTTON
1 
[+ object] : to attach (a button) by passing it through a hole
2 
[+ object] : to close or fasten (something) with buttons — often + up
3 
[no object] : to have buttons for fastening

button it

informal + impolite
— used to tell someone to stop talking

button your lip/lips

US, informal or keep your lip/lips buttoned
: to not talk about something