Added 9 October 2026 waistline /ˈweɪstˌlaɪn/ noun Categories: The BodyRare Words noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about waistline at Wordnik → Where our words come from → a line around the body at the waist; its measurement the narrowest part of a garment, usually at the waist, but may be above or below depending on the dictates of fashion or the whim of the designer person having a large waistline Related Words: waistwaterlinebustlinebeltlineworldlinewidthlin.ablinediagonalline Back to today's word