Root yielding English grime, grim from sense of damp/dirty surface.
bʰreg-₂“to break apart, be brittle”gley-“to stick, adhere, be slimy”gʰer-s-eyo-“to keep bristling, being rough”gʰers-“to bristle, be rough, stubble”gʷʰer-s-“to bristle, be rough”hrewh₁-“to tear up, make rough”h₂eḱ-r-is-“sharp point, keen edge”karh₂-tó-“hard, strong, resistant”