Old rice; rice remaining from a previous year’s harvest (typically less fresh than new rice).
新米が出る前に古米は値下がりすることが多い。
Old rice often drops in price before the new rice is released.
味が落ちるので古米は早めに消費したほうがいい。
Because the taste declines, it's better to consume old rice sooner.
冬の間に古米を使っておにぎりを作った。
I made rice balls using old rice during the winter.