HHR meaning in Community ?

Answer: What is Halloween Horror Nights mean?

Halloween Horror Nights (formerly known as Fright Nights) is an annual special event that occurs at Universal Studios theme parks in Florida, California, Singapore, and Japan. The parks remain operational during the day and transition to Halloween Horror Nights at night. The Halloween-themed event occurs during the fall season and features haunted houses, scare zones and live entertainment, many of which use Universal Studios' characters. Its intended audiences are teenagers and adults. Currently, Halloween Horror Nights are onset to return in 2021 in some parks. At Universal Studios Florida Jack the Clown will be returning as the Icon.

reference

Full Form	Category
Heritage High Roof	Academic & Science
Hawthorne (ca)	Airport Code
High Heat Resistant	Business
Helphire Group	Business
Harry Hermione Romance	Community
Halloween Horror Nights	Community
Hip Hop Rap	Community
Half-Horizontal Resolution (352 by 480 or 576)	Computer and Networking
Half Height Resolution	Computing
Home for Human Rights	General
Hand Held Radios	General
Hydrophobic Heptad Repeat	General
Huug Home Rentals	General
Homo Hot Rod	General
Hmong Human Rights	General
High Heritage Roof	General
Healey High Roads	General
Health Human Resources (or Health Workforce)	Healthcare
HRIDAYPUR	Indian Railway Station
Health and Human Rights	Medical
Health and Human Resources	Medical
Hybrid Health Record	Medical
Health Human Resources	Medical
Jack Northrop Field/Hawthorne Municipal Airport, Hawthorne, California USA	Regional