† adder-closen.Obsolete an enclosure containing adders; a snake pit.In quots. applied in Norse mythological contexts.
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1870 W. MorrisEarthly Paradise: Pt. IV 85 When song arose From that Northumbrian adder-close.
1893 A. LangHomer & Epic xvi. 397 Atli treacherously got Gunnar and Hogni and the other Niblungs into his power, cut out Hogni's heart, and put Gunnar in the adder-close.