Comparative evidence

1.dʰeu̯gʰ

• OInd. duh- 'milk', 'derive' (Whitney 1885: 76); 'milk', 'take advantage of', 'enjoy', 'squeeze out', 'extract'; 'give milk', 'yeild a desired object' (MW: 489)

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.