A casino is literally a "little house" in Italian — and in Italy, saying "casino" without the accent means "brothel" or "total mess."
A public building or room for gambling and other entertainment. Originally an Italian word for a small house or villa used for social gatherings.
From Italian casino, diminutive of casa ('house'), from Latin casa ('cottage, hut'). The word originally meant a small country house or social club before becoming associated with gambling in the 19th century. Key roots: casa (Latin: "cottage, hut").
In Italian, casino (with the stress on the second syllable) means "a little house" or "a mess/brothel" depending on context — and it's actually a mild profanity. The gambling establishment is properly casinò (stress on the last syllable). This distinction is lost in English, which borrowed only one pronunciation. The most famous