Wiktionary
square shooter
alt. (context idiomatic English) A person who is fair, trustworthy, or forthright; a person who bargains or transacts business in a fair, honest manner. n. (context idiomatic English) A person who is fair, trustworthy, or forthright; a person who bargains or transacts business in a fair, honest manner.
WordNet
square shooter
n. a frank and honest person [syn: straight shooter, straight arrow] [ant: liar]