The term SPOT FOR A BOUTONNIERE is a five-letter word, LAPEL. A LAPEL is the part of a jacket or coat that is folded back on either side of the front opening. It is also the part of a shirt or blouse that is folded back from the neckline and fastened to the collar. The spot for a boutonniere is typically located on the left LAPEL of a suit jacket or blazer. A boutonniere is a small flower or other decorative item worn on the LAPEL of a suit jacket or blazer.