The R in Hong Kong SAR
Puzzle 20 of Ghost Hunting Hard Pack
Question is: The R in Hong Kong SAR
and the answer is: REGION
Word Meaning:
REGION — Any considerable and connected part of a space or surface; specifically, a tract of land or sea of considerable but indefinite extent; a country; a district; in a broad sense, a place without special reference to location or extent but viewed as an entity for geographical, social or cultural reasons.
Definitions from Wiktionary.