To turn or fold inwardly.
To fold inward to create a hollow space where none had existed, as with a gastrula forming from a blastula.
To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure.
Having one portion of a hollow organ drawn back within another portion.
sheathed
To place in front of, or over against; to set opposite; to exhibit.
To object to.
To attempt to stop the progression of; to resist or antagonize by physical means, or by arguments, etc.; to contend against.
To present or set up in opposition; to pose.