family pack; family-size pack
Refers to a larger-sized package of a product intended for families, commonly used for food, snacks, or household goods.
スーパーでポテトチップスのファミリーパックを買った。
I bought a family pack of potato chips at the supermarket.
この洗剤のファミリーパックはお得です。
This family pack of detergent is a good deal.
Alternate spelling with a middle dot; less common but still seen.
Wasei-eigo (Japanese-made English) combining 'family' and 'pack'.