Comparative evidence

1.h₁eu̯

• OInd. u- 'proclaim' (Whitney 1885: 11); 'call' (to), 'hail', 'roar' 'bellow' (MW: 171)

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.