swallow hole


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swallow hole

[′swäl·ō ‚hōl]
(geology)
An opening that occurs occasionally at the bottom of a sinkhole which permits direct drainage from the surface into an underground channel.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

swallow hole

A term occasionally used as a synonym for owl hole although swallow holes are usually smaller.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
As water levels fall, the overflow channels drain water on the floor back into swallow holes that line the overflow channels (Malott 1952).
1952, The Swallow Holes of the Lost River, Orange County, Indiana.