Another Informal Word for a Rook in Chess

This page is the CodyCross answer for the clue below from Brazilian Tour, Group 764, Puzzle 3 (Colonial Cities).

Question is: Another Informal Word for a Rook in Chess

and the answer is: CASTLE

Word Meaning:

CASTLE — A large residential building or compound that is fortified and contains many defences; in previous ages often inhabited by a nobleman or king. Also, a house or mansion with some of the architectural features of medieval castles.

Definitions from Wiktionary.

Another informal word for a rook in chess — CodyCross Answer | CodyCross Solutions