noun
unripe plum; green plum
Refers specifically to the unripe, green fruit of the Japanese plum (ume), often used for making umeboshi or plum wine.
青梅で梅酒を作るのが楽しみです。
I look forward to making plum wine with unripe plums.
この時期、スーパーで青梅が売られています
At this time of year, unripe plums are sold at the supermarket.