Sheathed

Webster's Dictionary of the English Language

·adj Povided with, or inclosed in, sheath.

II. Sheathed ·Impf & ·p.p. of Sheathe.

III. Sheathed ·adj Invested by a sheath, or cylindrical membranaceous tube, which is the base of the leaf, as the stalk or culm in grasses; vaginate.