blueberry

1. An edible round berry, belonging to the cowberry group (Vaccinium sect. Cyanococcus), with flared crowns at the end, that turns blue on ripening. (countable) · Meronym: anthocyanin
2. The shrub of the above-mentioned berry. (countable)
3. A dark blue colour. (countable, uncountable)
4. A kind of small spherical hematite-rich mineral concretion found on Mars. (countable, informal)

Plural blueberries