1.
large size, large format, oversized
Something that is larger than the standard size. Used for books, paper, towels, and other items that come in size variations.
2.
large oval gold coin (historical)
A large oval-shaped gold coin used in feudal Japan, particularly during the Edo period. Often associated with wealth and treasure.
Usage
Sense 1 (large size) is common in everyday shopping and product descriptions. The expression 大判振る舞い means "generosity" or "lavish treatment," originally referring to spending large gold coins freely.
Sense 2 (gold coin) refers to the historical currency. The pair 大判小判 (large and small gold coins) is well known from historical dramas and stories.