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Webster 1913 Edition

Adj.

[LL.

castellatus

, fr.

castellare

. See

Inclosed within a building;

as, a fountain or cistern

castellated

[Obs.]

Johnson.

Furnished with turrets and battlements, like a castle; built in the style of a castle.

, a.

Inclosed in a building, as a fountain or cistern.

Adorned with turrets, and battlements, like a castle.

castellated

Having turrets or battlements, like a castle.
- 2004, Colm Toibin, The Master, Picador, paperback edition, page 2
  Finally he walked slowly into a vast Italian space, with towers and castellated roofs, and a sky the colour of dark blue ink, smooth and consistent.
(obsolete) Enclosed within a building.

a fountain or cistern castellated

(Can we find and add a quotation of Johnson to this entry?)