The buttonhole model is intended to show how much skill has been acquired.
A man had entered the car with an orange ribbon in his buttonhole.
The bar of the watch-guard worked through the buttonhole, and the watch—Platte's watch—slid quietly on to the carpet.
Disengaging the flower from his buttonhole he handed it to her.
But only think of dancing with lunatics—and such ugly ones too—and being held by the buttonhole by some wild-eyed ancient mariner.
It's too big to put in a wreath, so I'll wear it in my buttonhole.
Many workers, particularly tailors, always "stay" or "bar" around a buttonhole before working.
There was a pink bud in John's buttonhole, and a red one in Sir Peter's.
Lee had stopped at a florist's and bought a rose for his buttonhole.
If you like to wear a bit of red ribbon in your buttonhole, why, do so.
buttonhole but·ton·hole (bŭt'n-hōl')
A short straight surgical cut made through the wall of a cavity or canal.
The contraction of an orifice down to a narrow slit, as in mitral stenosis.
To get someone's attention as if by taking hold by a buttonhole: listening to and buttonholing other researchers
[1880+; Button in the same sense is attested from the early 1860s]