1) One of a hot, sultry period 2) Windows game 
• One of the dog days.
One of the dog days. ... <zoology> Dogday cicada, a large American cicada (C. Pruinosa), which trills loudly in midsummer. ... A period of from four to six weeks, in the summer, variously placed by almanac makers between the early part of July and the early part of September; canicular days; so called in reference to the rising in ancient tim...