Definition of wrappers:
(n) :
Something that is wrapped around something else as a cover or protection: a wrapping.
(n) :
An outer garment; a loose robe or dressing gown.
(n) :
One who, or that which, wraps.
(n) :
(object-oriented programming) A construct, such as a class or module, that serves to mediate access to another.
(n) :
(derogatory) A startup company that sells technology that it largely does not make.