Comparative evidence

h₁u̯er, h₂u̯er, h₃u̯er

• OInd. vr̥- 'cover' (Whitney 1885: 162); 'screen', 'veil', 'conceal', 'hide', 'surround', 'obstruct'; 'close' (a door); 'ward off', 'check', 'keep back', 'prevent', 'hinder', 'restrain' (MW: 1007)

References

MW = Monier-Williams, M. 1899. A Sanskrit-English Dictionary. Clarendon Press.
Whitney 1885 = Whitney W. D. 1885. The roots, verb forms and primary derivatives of the Sanskrit language. A supplement to his Sanskrit grammar. Leipzig.