also: ばらせん
noun
Refers to loose coins or small change, often in contrast to bills or larger denominations.
財布の中はバラ銭ばかりだ。
My wallet is full of nothing but small change.
バラ銭を数えて支払った。
I counted out the coins and paid.
小銭 is a more common word for small change; バラ銭 emphasizes the loose, unrolled state of the coins.
Compound of バラ (loose, scattered) and 銭 (coin, money). The exact origin of バラ is uncertain, but it is used in many words meaning 'loose' or 'bulk'.