What is the meaning of Estre?

The indoor layout or plan of a castle.

alternative form of étre (“to be”)

to be

being (creature, entity)

to be

archaic spelling of être

inflection of estrar:

1. first/third-person singular present subjunctive
2. third-person singular imperative

first/third-person singular present subjunctive

third-person singular imperative

sublative singular of est

Source: wiktionary.org