on the button
Exactly, precisely.
They arrived at 3:30, on the button.
noun
A knob or disc that is passed through a loop or (buttonhole), serving as a fastener.
I liked the man for his own sake, and even had he promised to turn out a celebrity it would have had no weight with me. I look upon notoriety with the same indifference as on the buttons on a man's shirt-front, or the crest on his note-paper.
Rather should it be said that these ladies wore dress of military style, since there was nothing uniform about their outfits, one being in powder-blue with silver buttons and a forage-cap, the other in tan with gold buttons and the dinkiest of red-peaked kepis.
A mechanical device designed to be pressed with a finger in order to open or close an electric circuit or to activate a mechanism.
Pat pushed the button marked "shred" on the blender.
An on-screen control that can be selected as an activator of an attached function.
Click the button that looks like a house to return to your browser's home page.
A badge worn on clothes, fixed with a pin through the fabric.
The politician wore a bright yellow button with the slogan "Vote Smart" emblazoned on it.
A bud.
O queen Emilia, / Fresher than May, sweeter / Than her gold buttons on the boughs,
verb
To fasten with a button.
He was a tall, fat, long-bodied man, buttoned up to the throat in a tight green coat.
To be fastened by a button or buttons.
The coat will not button.
To stop talking.
name
A surname originating as an occupation for a maker or seller of buttons.
A township in Ford County, Illinois, United States.