To turn to face the opposite direction.
Of a formation of soldiers, to reverse the direction in which they are facing; an about face.
A complete change of opinion, direction, etc.
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