packsack

"packsack" means a backpack, knapsack, rucksack or similar bag packed with provisions or personal items, especially as carried by a traveller or a hiker, and often slung over the shoulder. It is one of many casual words teens pick up from friends, social media, music or sport, and on its own it carries no particular warning. If you hear your teen use it, it is fair to ask what they mean by it in their friend group, since meanings drift quickly. Asking out of curiosity rather than alarm tends to keep the conversation open and useful.

"packsack" is informal English meaning a backpack, knapsack, rucksack or similar bag packed with provisions or personal items, especially as carried by a traveller or a hiker, and often slung over the shoulder. It is mainly used in North American English. A more formal or neutral equivalent would be something like "a backpack" expressed in standard vocabulary. A common mistake is to assume "packsack" can replace its standard equivalent in every register; keep it for spoken or casual situations and use the formal form in writing.