straw bag; straw sack
A traditional bag woven from straw, used for storing or transporting grains, charcoal, or other goods. The kanji 叺 is very rare; the word is normally written in kana.
In the old days, rice was carried in straw bags.
Standard kana spelling; the kanji 叺 is rarely used.
The origin is uncertain, but it may be related to the verb かます (to stuff or cram), reflecting the bag's use for packing goods.