incastellate

The story

1. Medieval Latin · borrowed fromincastellātus
2. English todayincastellate

First attested in 1552; borrowed from Medieval Latin incastellātus, perfect passive participle of incastellō (“to fortify, incastle, incastellate”) from in- (“in-: make into”) + castellum (“little fortification, castle; cistern”). Cognate with Italian incastellare.