From a keyword in C++ and derived programming languages, short for Boolean.
Meanings
A Boolean variable (one whose value is either true or false).
The base class BitArray acts just like a normal C++ array of bools, although you are of course free to interpret the bits as integers […] 2000, Mark A DeLoura, Game programming gems:
With an automatic conversion, bools will interfere with overload resolution […] 2000, Herb Sutter, Exceptional C++:
Listing 7-11 shows an example where the initial data type is string, but I will obtain its value as a bool. 2007, Joseph C Rattz, Pro LINQ: Language Integrated Query in C# 2008:
From b- + (c)ool, likely originally (or in imitation of) Blood slang.
Meanings
(slang) To relax or hang out (especially with someone).
You want a war, steady coming for the team / I'm just booling with my dogs, don't make me let 'em off the leash 2017 November 27, “I'm A Dog”, in Dotarachi HD Reloaded, performed by S Dot:
YG's starting the year strong with a new video for his 2018 single "Suu Whoop," released on Tuesday. In the gritty visual, we see the L.A. native booling with his friends in his city’s streets, in cars, outfitted in red clothing. 2018 March 13, Tara C. Mahadevan, “YG Reps His Set in the New Video for "Suu Whoop"”, in Complex, archived from the original on 26 Nov 2022:
Memories: going undefeated with MZ in round net against DA, ZM, JS, and FL. Playing soccer with a great group of dudes. Booling with BTY. 2019, Jeffery Epro, quotee, “Make Way for the Seniors!”, in Leominster High School Magnet, number 149, Leominster, M.A.: Leominster High School, page 28:
I appreciate how a lot of the people here care about similar social issues that I do. I can come here to bool and be my stupid self, but also I could come to have a conversation about how big corporations are gaslighting us into thinking that we are the problems in climate change. 2022 March 11, Kimberly Wipfler, quoting Beckett Morris, “New Coffee/Gathering Space Is Buzzing”, in New Haven Independent, archived from the original on 26 Apr 2022:
I'm drunk as fuck, booling with a couple racks on me (Freebandz) / All black Hellcat, Doja Cat mad at me (Boom) 2020 November 6, Doe Boy, Southside, “7 Days a Week”, in Demons R Us: