Plane n.  Bot. Any tree of the genus Platanus.
 Note: ☞ The Oriental plane ({Platanus orientalis}) is a native of Asia. It rises with a straight, smooth, branching stem to a great height, with palmated leaves, and long pendulous peduncles, sustaining several heads of small close-sitting flowers. The seeds are downy, and collected into round, rough, hard balls. The Occidental plane ({Platanus occidentalis}), which grows to a great height, is a native of North America, where it is popularly called sycamore, buttonwood, and buttonball, names also applied to the California species (Platanus racemosa).
 But·ton·wood n. Bot. The Platanus occidentalis, or American plane tree, a large tree, producing rough balls, from which it is named; -- called also buttonball tree, and, in some parts of the United States, sycamore. The California buttonwood is Platanus racemosa.
 ◄ ►
 Platanus racemosa
      n : tall tree of Baja California having deciduous bark and large
          alternate palmately lobed leaves and ball-shaped clusters
          of flowers [syn: California sycamore]