Costard
This is an extinct family of British apples that were popular beginning in the 13th century.
It was one of the first apples to be given a distinct name and the first to become an important kitchen apple.
It began to disappear towards the end of the 17th century despite it having had a reputation for superior flavour and a large size.
Costard, was the medieval slang word for ‘head’ and the name survives in the word ‘costermonger’, although such a person may now sell any kind of fruit or vegetable.