It definitely didn’t come to English through French since the Old English citations predate the Norman Conquest.
但是可以肯定的是它绝非来源于法语,因为在古英语尚在是有时,诺曼征服的时代还未到来呢。
2
Even the name has an ancient pedigree - it is derived from both the oldFrench word for crust (crouste), and the Anglo-Norman ‘crustarde’, which meant a tart or pie with a crust.