Wiktionary
n. (context bodybuilding English) A standard pose in which the chest, shoulder, and arm muscles are flexed with the arms in front of the body.
Wikipedia
The Most Muscular (also known as "the crab") is a common bodybuilding pose, often used to highlight as much of a contestant's muscle repertoire as possible by demonstrating the maximum mass of muscle to the judging panel.
All front-facing muscles should be showcased since the contestant forces their hands together at the same time as contracting the pectorals, obliques, anterior deltoids, biceps, forearms and abdominals. The quadriceps and calves should also be flexed if at all possible.
Usage examples of "most muscular".
The tallest, most muscular man, an English lord known for his skill with a battleax, spoke first, using the accepted diplomatic language, French.
He was the most muscular hundred-pound breeder who ever lived, and he did everything he could to make us all forget that he was, in the end, only a hundred pounds.
The town, at least the most muscular parts of it, was solidly on her side.
And to rule over these things and order any erring tendency there might be in some aberrant natures are the most muscular beings I have seen in the moon, a sort of lunar police, who must have been trained from their earliest years to give a perfect respect and obedience to the swollen heads.
He was only a man, a ruggedly handsome man at that, and surely the most muscular warrior in the group.
He was also the biggest and most muscular man Jordan had ever seen.
Tony Vincente, the most muscular of the laboratory crew, picked up a broadbladed ax he had ready.