From Longman Dictionary of Contemporary Englishbeefybeef‧y /ˈbiːfi/ adjective (comparative beefier, superlative beefiest) STRONG PERSONsomeone who is beefy is big, strong, and often quite fat
Examples from the Corpus
beefy• The beefy chest of a bulldog.• He was amused with a certain satisfaction on his beefy face.• At the next table a beefy father was staring at me openly.• The second prisoner was a fat-faced beefy fellow who smelled of sweat.• beefy football players• He was a little on the beefy side, I saw, but far from gone to fat.• Amanda and Tina were both beefy, sporty types. 