1. swimming in the middle of winter or the cold season
Wikipedia definition
2. Winter swimmingWinter swimming is the activity of swimming during the winter season, typically in outdoor locations or in unheated pools or lidos. Many winter swimmers swim with standard swimming costumes rather than with wetsuits or other thermal protection. The activity may or may not involve freezing water, depending on the geographical location and the local temperature. Famous winter swimmers are Lynne Cox and Lewis Gordon Pugh.
Read “Winter swimming” on English Wikipedia
Read “寒中水泳” on Japanese Wikipedia
Read “Winter swimming” on DBpedia


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