形容詞 crusty:

1. having a hardened crust as a covering
   同義詞：crusted, encrusted, crustlike
2. brusque and surly and forbidding
   同義詞：curmudgeonly, gruff, ill-humored, ill-humoured

1. One of the crusty ends of a loaf of bread.
   面包頭一條長包面的兩個硬端之一
2. He's a crusty old gentleman who feeds stray dogs and cats.
   他是個令人生畏的老紳士，常喂食離群的狗和貓。
3. Little Tom swabbed up the gravy with crusty bread.
   小湯姆用硬面包把肉汁抹得干干凈凈。

crust.y

adj.（形容詞）
crust.i.er,crust.i.est
Having, resembling, or being a crust.
硬皮的，外殼的：有、象或成為硬皮或外殼的
Seemingly rough and surly in manner.See Synonyms at gruff
粗魯無禮的：舉止風(fēng)度明顯粗魯無禮的參見 gruff

【引伸】
crust.ily
adv.（副詞）
crust.iness
n.（名詞）