Not quite. As the article explains, the longbow is composite, but made from a single piece of wood:
"Figure 1 illustrates a yew trunk cross section and how a longbow stave was carved out of the tree to incorporate both its sapwood and heartwood components. The former was used on the bow’s back, which faced away from the archer, taking advantage of the fact that flexible sapwood performs well under tension. The latter was used on the bow’s belly, which faced the archer, taking advantage of the fact that hard heartwood performs well under compression. Together the two types of wood created a natural composite bow that, when made from a long and thick stave, was remarkably powerful."
"Figure 1 illustrates a yew trunk cross section and how a longbow stave was carved out of the tree to incorporate both its sapwood and heartwood components. The former was used on the bow’s back, which faced away from the archer, taking advantage of the fact that flexible sapwood performs well under tension. The latter was used on the bow’s belly, which faced the archer, taking advantage of the fact that hard heartwood performs well under compression. Together the two types of wood created a natural composite bow that, when made from a long and thick stave, was remarkably powerful."
So, nature glued the parts together.