[1] : The Collaborative International Dictionary of English v.0.48

dog day \dog" day`\ or dogday \dog"day`\
   one of the dog days.
   1913 webster

   dogday cicada zool., a large american cicada cicada
      pruinosa, which trills loudly in midsummer.
      1913 webster dog days
see also:
dogday cicada cicada pruinosa 

Cicada >> C Words
Cicada, definition of term: Cicada
cicada_pag1.html

Cicada Killer >> C Words
Cicada Killer, definition of term: Cicada Killer
cicada+killer_pag1.html