also: オールドファッションドグラス
noun
Old Fashioned glass; rocks glass
A short, wide tumbler used for serving cocktails like the Old Fashioned or spirits on the rocks. The term is a direct loan from English and is used primarily in bar and cocktail contexts. It is a rare term, but it is understood among cocktail enthusiasts.
See also: ロックグラス
バーテンダーはオールドファッショングラスに氷を入れた。
The bartender put ice into the Old Fashioned glass.
このカクテルにはオールドファッショングラスが合う。
An Old Fashioned glass suits this cocktail.
Synonymous; ロックグラス is the more common Japanese term for a rocks glass, while オールドファッショングラス is a direct loanword used in specialized contexts.
Borrowed from English 'Old Fashioned glass', referring to the cocktail glass. The variant with 'ド' reflects the English 'd' sound.