περιστέγω

A. retain heat, etc. by covering, Hp. Acut. 21, Thphr. Ign. 19; contain a fluid, Gal. 15.709 :—Pass., Arist. Pr. 900a1, Thphr. CP 1.19.2.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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