noun.
The peridium of fungi.
noun.
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noun.
In botany: Bark, as of a tree. See bark.
noun.
In Chara and some algæ, a covering of tubular or other cells inclosing the axis; in lichens, the cortical layer (which see, under cortical).
noun.
Specifically, in medicine, Peruvian bark.
noun.
In anatomy and zoology, some part or structure likened to bark or rind; cortical substance: as, the coriex of the brain.