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 reposition by turning, flipping, etc. in a downward direction; to double or fold down.
To reduce the power, etc. of something by means of a control, such as the volume, heat, or light.
To refuse, decline, or deny.