干し (hoshi) means “drying” | MotiTan Japanese Dictionary

More examples

干しが足りない野菜は、風通しのよい場所でさらに乾かします。ho shi ga ta ri na i ya sai wa kaze tō shi no yo i ba sho de sa ra ni kawa ka shi ma su

Vegetables that have not dried enough are dried further in a well-ventilated place.

Describes making something dry by letting moisture leave it, especially through air or sunlight.

乾燥kansō: The process of removing moisture from something to make it dry.

物の水分を抜いて乾かすこと。mono no sui bun o nu i te kawa ka su ko to

干し (hoshi) is formed from 干す (hosu), "to dry", with the verb stem functioning as a noun.

The same noun appears in 干し柿 (hoshigaki), where it identifies a persimmon preserved by drying rather than by adding a new ingredient.