Comparative evidence

h₃mei̯ǵʰ

• OInd. mih- 'mingere' (Whitney 1885: 121); 'void urine', 'pass urine', 'make water' (upon or towards); 'emit seminal fluid' (MW: 818)

• OInd. mih- 'mist', 'fog', 'downpour of water' (MW: 818)

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.