Related words リュックサック Common modern word for 'backpack', used in everyday contexts. 背嚢 is rarer and carries a more old-fashioned or military nuance.
バックパック Another common modern term for 'backpack', especially for travel or hiking. 背嚢 is less frequently used and may sound dated.
Written forms 背はい 嚢のう Usage 40%
Standard kanji form for 'knapsack'.
背はい のう Usage 60%
search-only kanji form
Search-only kanji form; not a standard written form.
Etymology Compound of 背 (hai, 'back') and 嚢 (nō, 'bag, pouch'). The kanji 嚢 is relatively rare in modern Japanese.
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