ETYM Old Eng. forow, forgh, furgh, AS. furh.
A long shallow trench in the ground (especially one made by a plow).

ETYM Greek glyphe carving, from glyphein to carve: cf. French glyphe. Related to Cleave to split.
A symbolic figure carved or incised in relief.
Groove; ancient wall carving.

ETYM Dutch groef, groeve; akin to Eng. grove. Related to Grove.
1. A long narrow furrow or channel cut by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record).
2. (Anatomy) Any furrow or channel on a bodily structure or part.