From Wiktionary, the free dictionary
encastle (third-person singular simple present encastles, present participle encastling, simple past and past participle encastled)
- (obsolete) Alternative form of incastle: To add castles to a place.
- 1611, John Florio, Queen Anna's New World of Words, s.v. "Incastellare":
- ...to encastle, to fortifie with castles, to reduce or bring to a castle.