A term used to describe an athletic body type (i.e low body fat, flat stomach, etc.) in an online dating or chat profile. Mostly used in gay men's profile's online, the term has a generally positive or desirable connotation and covers all aspects of the "in shape" physique, not just the sport of swimming. Contrast with more disingenuous sports related body type euphemisms like linebacker build or football player build (fat), and runner build (skinny).
WGM, 22, 6'0"/175# Brn/Grn, lean, tight swimmers build.