Castle
/kˈæsəl/
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Definition
(noun) 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.
Sentence Examples
What you are saying is nothing but building a castle in the air.
A castle stands a little way up the hill.
CEFR Practice Quiz
An ancient ____ stands on the high hill overlooking the whole city.