Pertaining to something which has been placed into a wall, i.e., immured.(adjective)
Simple past tense and past participle of wall.(verb)
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Use "walled" in a sentence
"The skins are thin walled and have a great crusty bottom."
"They yearn for the real stuff, taxi holdups and pickpockets on the Mexico City metro, twisted iron bars and neighborhood break-ins, even in walled enclaves."
"But there are many more places where the advertisers and publishers are contained in walled gardens."