tree          
noun [ C ] uk/triː/ us/triː/
A1 树,树木;乔木
a tall plant that has a wooden trunk and branches that grow from its upper part
  a plum/apple/chestnut tree 李子/苹果/栗子树 
 an oak/elm/maple tree 橡/榆/枫树 
 We sat under a tree for shade. 我们坐在树下乘凉。 
  (没有木质树干的)树
another type of tall plant, without a wooden trunk
  palm trees 棕榈树 
 - More examples
 - A fallen tree is blocking the road.
 - The birds built their nest in the small fir tree.
 - The air was so still that not even the leaves on the trees were moving.
 - These trees will have to be cut down to make way for the new road.
 - A young boy climbed into the apple tree and shook the branches so that the fruit fell down.