Jack Daniels. In a 1-oz. serving of Jack Daniels whiskey, which equates to a little less than a full shot at a respectable bar, contains about 69 calories. While that may not seem like a lot, after a couple of these bad boys mixed with cola, you've racked up quite a few calories. Jose Cuervo.
Medical Definition of black widow. : a venomous New World spider of the genus Latrodectus (L. mactans) the female of which is black with an hourglass-shaped red mark on the underside of the abdomen; broadly : any other spider of the genus Latrodectus.
(Newser) â Black widow spiders are known for their lethal venom, but just how did they get so deadly? Apparently by evolving quickly over the years during their pursuit of ever-bigger prey, Discovery reports. According to a new study, black widows and house spiders have comparable toxic compounds in their venomâbut black widows evolved faster and became far more dangerous. The common compounds are called latrotoxins; the black widow, however, produces alpha-latrotoxin, which takes over an unlucky victim's nervous system.