A slender, leafless portion of a plant by which it becomes attached to a supporting body, after which the tendril usually contracts by coiling spirally. Note: Tendrils may represent the end of a stem, as in the grapevine; an axillary branch, as in the passion flower; stipules, as in the genus Smilax; or the end of a leaf, as in the pea.
Clasping; climbing as a tendril....