Real Dictionary

shrink wrap in British English
noun

shrink-wrap in American English
a wrapping of such material
to wrap (a commodity) in a tough, transparent plastic material which is then shrunk by heating to form a sealed, tightfitting package
noun: the plastic film used to shrink-wrap something
transitive verb: to wrap and seal (a book, a food product, etc.) in a flexible film of plastic that, when exposed to a heating process, shrinks to the contour of the merchandise

shrink-wrap in British English
verb: to package (a product) in a flexible plastic wrapping designed to shrink about its contours to protect and seal it