Portly is an adjective meaning heavy or stout, often with overtones of being dignified or imposing. Here are example sentences: '"The portly man was having difficulty climbing out of the small car."...
Frank Zappa's song 'Eddie, are you kidding?' had the lyric,"I'm coming over shortly becasue I am a portly..." The portly porter's pouting potbelly pig protruded preponderously from the portal.