oak

1. (countable) A deciduous tree with distinctive deeply lobed leaves, acorns, and notably strong wood, typically of England and northeastern North America, included in genus Quercus.Examples: "It was not far from the house; but the ground sank into a depression there, and the ridge of it behind shut out everything except just the roof of the tallest hayrick. As one sat on the sward behind the elm, with the back turned on the rick and nothing in front but the tall elms and the oaks in the other hedge, it was quite easy to fancy it the verge of the prairie with the backwoods close by."; "Instead there were the white of aspens, streaks of branch and slender trunk glistening from the green of leaves, and the darker green of oaks, and through the middle of this forest, from wall to wall, ran a winding line of brilliant green which marked the course of cottonwoods and willows."countable

2. (uncountable) The wood of the oak.uncountable

3. (wine) The flavor of oak.countableuncountable