buttonhole
1. but.ton.hole \-.ho-l\ n : a slit or loop for fastening a button 2. buttonhole vt 1: to furnish with buttonholes 2: to work with buttonhole stitch - but.ton.hol.er n 3. buttonhole vt [alter.of buttonhold] : to detain in conversaton by or as if by holding on to the outer garment s of