groove(redirected from obturator groove)
Also found in: Dictionary, Thesaurus, Medical.
1. the spiral channel, usually V-shaped, in a gramophone record
2. Anatomy any furrow or channel on a bodily structure or part; sulcus
3. Mountaineering a shallow fissure in a rock face or between two rock faces, forming an angle of more than 120?
4. in the groove Jazz playing well and apparently effortlessly, with a good beat, etc.
A continuous recess formed centrally along the edge of a timber board in order to accommodate a tongue.
Any of a group of depressions in the double helix of deoxyribonucleic acid that are believed to be sites occupied by nuclear proteins.
A long, narrow channel in a surface.
Glaciated marks of large size on rock.
One of the spiral depressions in the rifling of a gun to impart a spinning motion to a projectile which stabilizes it in flight.