old money

derogatory idiomatic often uncountable Britain Ireland humorous

(idiomatic, often derogatory) Families that have been wealthy for generations or members of such families.

Japanese Meaning

何世代にもわたって裕福であった家族、またはその家族の構成員。 / 先祖伝来の財産を持つ一家、あるいはその一員。

At the charity auction, the old money quietly outbid everyone for the antique vase.

チャリティーオークションで、代々続く裕福な家族がアンティークの花瓶を誰よりも高値で落札した。

Sense（1）

(idiomatic, often derogatory) Families that have been wealthy for generations or members of such families.

Sense（2）

Sense（3）

(humorous) The imperial system of measurement, as opposed to the metric system.

These scales say I weigh 72 kilograms; what's that in old money?