buttonhole /ˈbʌtənˌhoʊl/noun 7verb 6forms 3 noun7 •A hole through which a button is pushed to secure a garment or some part of one. •(UK) A flower worn in a buttonhole for decoration. •[before a noun] (UK) So shaped that it can be worn on a buttonhole or it is similar to a buttonhole. •A small slotlike cut or incision, made for example by an accident with the scalpel.The usual cause of conjunctival buttonholes is penetration of the tissue by the tip of a sharp instrument […] — 2011 •(slang) The butthole (anus). •The mouth, nose or eyes of a tiny appearance. •(slang, no longer used) The vagina, a coin slot. verb6 •(informal) To detain (a person) in conversation against their will.Hiro and Chuck grab the closest thing they can find to a corner table. Hiro buttonholes a waiter and surreptitiously orders a pitcher of Pub Special, mixed half and half with nonalcoholic beer. — 1992 •To cut one or more buttonholes (in). •To sew by buttonhole stitch. •(rare) To apply a flowery formation in. •(no longer used) To make a small slot-like incision in (intentionally or unintentionally). •(no longer used, rare) To attain buttonhole-like formations on cutting. formsbuttonholed · buttonholing · buttonholes