hydro

Noun

hydro (countable and uncountable, plural hydros)

1. (Canada, uncountable) Electrical power supply; specifically, electrical power provided by a utility (as a publicly-owned one); payment or bills for this.
   • I won't have lights until my house gets the hydro turned on.
   • She was having trouble paying the hydro.
2. (UK, countable, dated) A spa.
   • She almost lived at hotels and hydros, last year, but that isn't pleasant for her.1909, Rudyard Kipling, The House Surgeon
3. (rare, uncountable) Water.
   • “Can I get you somethin’ to drink?” she asked. “How much hydro you got in storage?” “Six Gs.”1995, Max Allan Collins, chapter 4, in Waterworld, New York, N.Y.: Boulevard Books, →ISBN, page 37
   • Dihydrogen monoxide is the chemical name for water, and a quartet of Riverside High School students are up to their necks in the hot kind after their Internet-inspired prank made dozens of homeowners not readily acquainted with chemical terms hyper over hydro.1997 April 19, Dennis B[rian Patrick] Roddy, “Internet-inspired prank lands 4 teens in hot water”, in Pittsburgh Post-Gazette, volume 70, number 262, Pittsburgh, Pa.: Block Communications, →ISSN...
4. (slang, uncountable) Hydroponically-grown marijuana.
   • Dope is kinda like riding a bike that doesn't go anywhere, flips upside down, and who's number of wheels varies, during use, between 1 and 4. And sometimes there's fuzzy purple things riding on it with you. But you have to get hold of some hydro if you want the purple things to sing.1999 June 13, Lithium, “Marijuana Kills!”, in misc.fitness.weights (Usenet), archived from the original on 01 Feb 2026
   • You're probably smoking that $50 an ounce garbage that people sell in Dallas. Buy some hydro. That way you only need like three hits, and no paranoia.1999 June 21, 83, “Whigg out on weed?”, in alt.rave (Usenet), archived from the original on 01 Feb 2026