An Etymological Dictionary of the German Language/sperren
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sperren, vb., ‘to bar, obstruct, fasten,’ from MidHG. and OHG. spęrren (pret. sparte, OHG. sparta), wk. vb., lit. ‘to provide with spars.’ Deriv. of Sparren.
sperren, vb., ‘to bar, obstruct, fasten,’ from MidHG. and OHG. spęrren (pret. sparte, OHG. sparta), wk. vb., lit. ‘to provide with spars.’ Deriv. of Sparren.