To withdraw an organ or body part within itself or its base.
To think about internal or spiritual matters.
An organ or other body part that is or can be turned inside out, especially an anterior portion of some annelid worms capable of retraction.
An introverted person: one who is considered more thoughtful than social, with a personality more inwardly than outwardly directed; one who often prefers to have time in non-social situations.
A reserved person.
To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure.
To fold inward to create a hollow space where none had existed, as with a gastrula forming from a blastula.
To turn or fold inwardly.
Having one portion of a hollow organ drawn back within another portion.
sheathed