Comparative evidence

dʰegʷʰh₂

• OInd. dagh- with paścā-or paścāt- ‘fall short of’; with aghas- ‘reach below the regular height’; ‘strike’, ‘protect’, ‘flow’ (MW: 466); ‘reach’ (Whitney 1885: 69)

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.