Definition of "square-jawed" [square-jawed]

• Having a relatively square jaw (adjective)

WordNet. Princeton University. 2010.

• "Sometimes he makes brief statements; other times he just smiles, as a sort of square-jawed presence on an otherwise humdrum tableau."
• "Especially square-jawed Matt, who introduces himself saying, I play baseball."
• "Damon's looks always promise the square-jawed decency of a 1950s leading man."