Sentence:  Every morning early , in the summer , we searched the trunks of the <WSD>trees</WSD> as high as we could reach for the locust shells , carefully detached their hooked claws from the bark where they hung , and stabled them , a weird faery herd , in an angle between the high roots of the tulip tree , where no grass grew in the dense shade . 
Meaning of the word marked with <WSD> tags:  a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms