Grugion, n. emmets, ants

Grugionyn, n. an emmet

Gruglwyn, n. sweet broom

Grugo, v. to gather heath

Grugog, a. having heath

Grut, n. grit; a fossil

Grutio, v. to lay on grit

Grwgach, v. to rumble

Grwgnachiad, n. a rumbling

Grwgnach, v. to grumble