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smallness; small item
short month (i.e. having fewer than 31 days)
elementary school
smaller (of two things, places, etc. with the same name); inferior
younger (of two people with the same name); junior
「小」 has other readings with different meanings.
彼女はハンドバッグから小銭を取り出した。
She took out small change from her handbag.
この服のサイズは小を選びました。
I chose the small size.
小雨が降り始めたので傘を開いた。
It started to drizzle so I opened my umbrella.