close up, surround, wall in, wall out; see enclose 1.
"wall-up." YourDictionary, n.d. Web. 15 October 2018. <http://thesaurus.yourdictionary.com/wall-up>.
wall-up. (n.d.). Retrieved October 15th, 2018, from http://thesaurus.yourdictionary.com/wall-up
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