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 loosen, as something interlaced or knotted; to disengage the parts of.
In the Perl programming language, to undo the process of tying, so that a variable uses default instead of custom functionality.
To resolve; to unfold; to clear.
To become untied or loosed.
To free from fastening or from restraint; to let loose; to unbind.