noun
A commercial establishment where customers play mahjong, often with table fees. Compare 雀荘 (じゃんそう), a more common abbreviation.
See also: 雀荘
駅前に新しい麻雀荘ができた。
A new mahjong parlor opened in front of the station.
彼は週末になると麻雀荘に入り浸っている。
He spends every weekend hanging out at a mahjong parlor.
雀荘 is a more common abbreviation for a mahjong parlor. 麻雀荘 uses the full word 麻雀 and is slightly more formal or descriptive.
Compound of 麻雀 (マージャン, 'mahjong') + 荘 (そう, 'villa' or 'establishment'). The suffix 荘 is used in names of businesses, especially those providing a place for leisure activities.