lemonade

noun

1. (Canada, India, Philippines, US, countable, uncountable)A flavored beverage consisting of water, lemon, and sweetener, sometimes ice, served mainly as a refreshment. (In the UK and Ireland, generally specified as still, cloudy, or traditional lemonade.)

   “Mrs. Murphy, who had […] stopped for a few minutes, at Mrs. Loring's invitation, to rest and enjoy the cool glass of lemonade that was very refreshing after her long walk.”

   “The tiny flowers on the long skirt and sleeveless halter-top made her look like she belonged in some Southern porch handing out lemonade and sweet tea.”

2. (Australia, New-Zealand, UK, countable, uncountable)A clear, usually carbonated, beverage made from lemon or artificial lemon flavouring, water, and sugar.
3. (countable, derogatory, slang, uncountable)Recreational drugs of poor or weak quality, especially heroin.

   “In fact, a recent report from Denver shows it [street heroin] was about 1 to 2 percent and the addicts that are receiving this in many cases refer to it as lemonade, because it is so weak.”

   “Lemonade — heroin; poor quality drugs”