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 turn.
To shift in a clockwise direction (if in the Northern Hemisphere, or in a counterclockwise direction if in the Southern Hemisphere).
To change direction or course suddenly; to swerve.
To shift aft.
To change direction into the wind; to wear ship.
A turn or swerve; an instance of veering.