noun
used item; secondhand item
Refers to an item that has been previously owned or used; often appears in the compound お古 (hand-me-down).
See also: お古
これは姉のお古のランドセルです。
This is my older sister's hand-me-down school bag.
noun, used as a prefix
Prefix-like use meaning 'old', 'used', or 'previous'; attaches to nouns to indicate something is not new or is from an earlier time.
古新聞をまとめて捨てた。
I bundled up the old newspapers and threw them away.
古い友人に久しぶりに会った。
I met an old friend for the first time in a while.
From Old Japanese; cognate with 古い (furui, 'old'). The noun/prefix form 古 (furu) is a bound form that appears in compounds and as a standalone noun for used items.