perianth
In mosses, the involucral bracts of a male flower.
A sac surrounding the generative bodies in the gonophore of a hydroid.
One who, or that which, wraps.
An outer garment; a loose robe or dressing gown.
Something that is wrapped around something else as a cover or protection: a wrapping.
A construct, such as a class or module, that serves to mediate access to another.