Sinkhole

Countersunk hole stands for:

• various forms of opening in the terrain surface, see sinkhole
• a drainage system, especially Swiss, see road drain
• technically a hole prepared for a rivet, see riveting process
• technically a bore with chamfer, see sinks
• technically the earth borehole of an unbalance borehole

See also:

• Sinkhole

This is a disambiguation page for differentiating between several terms identified with the same word.