This is the 8231st most frequent Japanese word.
干せる
"干せる" means "to be able to dry."
干せる is used to express the capability to dry something.
このタオルは外で干せる。
This towel can be dried outside.
干せる is used here to indicate the ability to hang laundry for drying due to external conditions.
天気がいいので洗濯物を干せる。
Since the weather is nice, I can hang the laundry to dry.
干せる is being used to talk about drying larger items like comforters in a specific area.