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Wiktionary
coldspot

n. (context physiology English) variant of cold spot.

Wikipedia
Coldspot

Coldspot was a Sears brand that existed from 1928 to 1976, when it was replaced with the Kenmore brand. The brand was originally created for a line of refrigerators. Other products sold under the Coldspot brand also included freezers, dehumidifiers, and window air conditioning units.

Coldspot (Wi-Fi)