1. 
   Swallet
   Swal'let noun [ Confer German schwall a sea swell, from schwellen to swell, English swell .] Water breaking in upon the miners at their work; -- so called among tin miners. [ Prov. Eng.]
   Found op http://www.encyclo.co.uk/webster/S/254
   
   
2. 
   Swallet
   • (n.) Water breaking in upon the miners at their work; -- so called among tin miners.
   Found op http://thinkexist.com/dictionary/meaning/swallet/
   
   
3. 
   SWALLET
   Usually related to karst, may be considered as a form of sinkhole, but could refer to a streamsink; (often associated with a cave entrance) and is one of the major entry points for recharge waters that drain underground in carbonate rock areas such as limestone. Swallets may empty directly into open...
   Found op http://www.cancaver.ca/docs/glossary.htm
   
   

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