An Etymological Dictionary of the German Language, W (1891)
by Friedrich Kluge, translated by John Francis Davis
Wehr
Friedrich Kluge2508483An Etymological Dictionary of the German Language, W — Wehr1891John Francis Davis

Wehr, f., ‘defence, resistance, protection,’ from MidHG. węr, OHG. węrî, f., ‘defence, fortification’; allied like ModHG. Wehr, n., ‘dam, weir,’ late MidHG. węr, n., ‘weir,’ to wehren, ‘to protect, defend; hinder, prevent, oppose, forbid.’ This verb is from MidHG. węrn, węrgen, OHG. węrian, węren, wk. vb., ‘to hinder, protect, defend’; comp. Goth. warjan, ‘to forbid, hinder,’ OSax. werian, ‘to hinder.’ On account of the meaning, its connection with wahren (root wor, ‘to look on,’ in Gr. όράω) is not so apparent as its primit. kinship with the Sans. root vṛ, ‘to check, restrain, hinder.’