sinkhole

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sinkhole

[′siŋk‚hōl]
(geology)
Closed surface depressions in regions of karst topography produced by solution of surface limestone or the collapse of cavern roofs.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The sink hole did not occur near the company's operations, anddid not cause any injuries.