verb (used with object), but·ton·holed, but·ton·hol·ing.
Examples from the Web for buttonhole
The next thing that I saw was that he took from her curls a rosebud and appropriated it to his buttonhole.Homestead on the Hillside|Mary Jane Holmes
He had a many-colored rosette at his buttonhole, showing that he was the knight of more than one foreign order.Caught In The Net|Emile Gaboriau
He then takes the scouts' oath and is enrolled as a tenderfoot and is entitled to wear the buttonhole badge.Outdoor Sports and Games|Claude H. Miller
When Claudius returned his friend was waiting for him, and himself pinned a large and expensive rose in the Doctor's buttonhole.Doctor Claudius, A True Story|F. Marion Crawford
But he didn't carry them as a bouquet, nor wear one in his buttonhole.The Tale of Nimble Deer|Arthur Scott Bailey