crusty
/ˈkrʌstɪ; `krʌstɪ/ adj
(-ier, -iest)
1 having or resembling a crisp crust 有（或似）脆皮的
crusty French bread 有脆皮的法式面包
a crusty pizza base 形成脆的硬皮的意大利烤饼的底部.
2 (infml 口) (esp of older people or their behaviour) easily angered; short-tempered （尤指上年纪的人或其行为）动辄发火的, 急性子的
a crusty old soldier 脾气暴躁的老兵.