from the GNU version of the Collaborative International Dictionary of English.
- noun Prov. Eng. Water breaking in upon the miners at their work; -- so called among tin miners.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun UK A
sinkhole; a shakehole.
- noun UK, dialect, dated, mining Water breaking in upon the
minersat their work.
from Wiktionary, Creative Commons Attribution/Share-Alike License
Compare German Schwall a sea swell, from schwellen to swell. See English swell.