Rhwchiala, v. to grunt
Rhwchiawl, a. grunting
Rhwchws, n. a ray, a skate
Rhwd, n. sediment; smut; rust
Rhwdog, a. covered with rust
Rhwf, n. what swells or puffs out
Rhwg, n. what projects; a ruff
Rhwgn, n. a rub, a friction
Rhwng, n. an intermediacy
Rhwmp, n. a borer, an anger