Roots/*werh₃-s-werh₃-s-“to rain, to drip moisture”Debatedwaterweatherirrigate, urineRoot related to flowing moisture, yielding Latin irrigāre and ūrīna "urine".Related Roots(H)meyǵʰ-“to urinate, to mist”(s)teh₂n-“to thunder”(s)tenh₂-“to crash, to thunder”Hreg-“to wet, to rain”bʰleh₁-s-“to blow, to blast”bʰlewH-“to overflow, to well up”bʰleḱ-“to flash, lightning flash”dʰenh₂-“to flow, to run (liquid)”