folding umbrella; collapsible umbrella
A compact umbrella that folds down to a smaller size. Often synonymous with 折りたたみ傘, though 折り傘 may emphasize the folding mechanism.
See also: 折りたたみ傘
I keep a folding umbrella in my bag in case of sudden rain.
Standard spelling with okurigana; the most common written form.
Abbreviated kanji spelling without okurigana; also encountered.
Compound of 折り (ori, 'folding', from verb 折る) and 傘 (kasa, 'umbrella').