Girth/ɡɜːrθ/ Definition 1 of 3Pro Tip 1/3Physical Description Used to describe someone's body size, often gently implying they're quite wide. After the holidays, my uncle's girth seemed to have expanded. Pro Tip 2/3Not for Length Remember, 'girth' is about thickness, not how tall or long something or someone is. The ancient tree's girth was impressive, unlike its height. Pro Tip 3/3Neutral Tone The term does not inherently carry judgement, though context might imply it. The tailor measured his girth with a neutral expression.