The inframammary fold, also known as the breast crease, is the area where the bottom of the breast meets the chest wall. There are several synonyms for this anatomical feature, including the submammary fold, subpectoral sulcus, and mammary sulcus. The submammary fold is used more commonly in plastic surgery terminology, while the subpectoral sulcus refers to the area under the pectoral muscle. The mammary sulcus is a more general term that encompasses the entire area where the breast attaches to the chest wall. Regardless of terminology, the inframammary fold is a crucial landmark in breast surgery and assessment.