velamen

Etymology
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Noun

 * 1)  A covering membrane or velum
 * 2)  A spongy, usually pale, multiseriate epidermis (i.e. consisting of multiple layers of cells) covering the roots of some kinds of plants, especially plant species with an epiphytic or semi-epiphytic habit. Examples include various orchid and Clivia species

Etymology
From.

Noun

 * 1) cover, covering
 * 2) clothing, robe, garment
 * 3) veil

Noun

 * 1)  set of sails of a boat