noun
Western-style umbrella; parasol
Refers to an umbrella with a Western design, as opposed to a traditional Japanese umbrella (和傘). Can be used for both rain umbrellas and parasols.
See also: 和傘
急に雨が降ってきたので、洋傘をさした。
It suddenly started raining, so I put up my Western-style umbrella.
彼女は日差しを避けるために白い洋傘を差
She is holding a white parasol to avoid the sunlight.
Compound of 洋 (よう, 'Western') + 傘 (がさ, 'umbrella'). The reading ようがさ is standard; ようさん is a rare alternative reading.