Definition of introverts:
(n) :
(psychology) 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.
(n) :
(figuratively, proscribed) A reserved person.
(v) :
To turn inwards.
(v) :
To think about internal or spiritual matters.
(n) :
(zoology) 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.
(v) :
(zoology) To withdraw an organ or body part within itself or its base.