Definition of clings:
(v) :
To hold very tightly, as to not fall off.
(v) :
To adhere to an object, without being affixed, in such a way as to follow its contours. Used especially of fabrics and films.
(v) :
(transitive) To cause to adhere to, especially by twining round or embracing.
(n) :
Adherence; attachment; devotion.
(v) :
(figurative, with preposition to) To be fond of, to feel strongly about and dependent on.
(n) :
Fruit (especially peach) whose flesh adheres strongly to the pit.