What does 大小 mean?
大小 is a Japanese noun meaning “size” in English. It can also be translated as “large and small (sizes), daishō (matched pair of long and short swords), large and small drums” depending on context. It is written as 大小 in kanji, だいしょう in hiragana, and daishou in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
道路上の大小の石に気をつけなさい。
Watch out for big and small stones on the road!