TUCUM n.
A fine, strong fiber obtained from the young leaves of a Brazilian palm (Astrocaryum vulgare), used for cordage, bowstrings, etc.; also, the plant yielding this fiber. Called also tecum, and tecum fiber.
Z n.
ymologically, it is most closely related to s, y, and j; as in glass, glaze; E. yoke, Gr. yugum; E. zealous, jealous. See Guide to Pronunciation, §§ 273, 274.