straight arrow

火曜日と水曜日朝から出勤前に畑と買い物で忙しく、珍しくブログを二日も休んでしまいました。
さて、The Power of Noticing by Max H. Bazermanを読んでいます。
Bradstreet had an impressive resume: he attended Harvard College on an ROTC scholarship, rose to the rank of captain as a fighter pilot and air combat instructor over a five-year stint in the Marines, returned to Harvard and got an MBA, launched a career in business, and more broadly developed a reputation as an impressive businessperson, dedicated husband, and straight arrow.
最後に出てきた "straight arrow" とはどんな人物なのでしょうか？　辞書を見ます。
・Oxford English Dictionary: An honest, morally upright person.: You can tell his character is gonna be a straight arrow when he refuses to let an unctuous lobbyist buy him breakfast.
・Cambridge English Dictionary: someone who is very honest and careful to behave in a socially acceptable way: Friends described Menendez as a straight arrow who rarely drank and was close to his family.
なるほど、真っすぐな人ですね。分かり易い。