sake cup; small cup for drinking sake
A small cup, typically ceramic, used for drinking sake. The word is polite (お + ちょこ) and very common in everyday conversation about drinking.
See also: ちょこ
We poured sake into the small cups and made a toast.
このおちょこは手作りの陶器で、一つ一つ形が違う。
These sake cups are handmade pottery, and each one has a different shape.