veraison
n.— «The growers thin the fruit when it’s going into veraison (a French term referring to the color change that happens as a grape is ripening), and the unripe fruit is pulled off the vine to give the more promising fruit more room to mature.» —“Good ‘n’ Sour Grapes” by Ella Lawrence Metroactive (San Jose, California) Mar. 30, 2005. (source: Double-Tongued Dictionary)