What does "overwrap" mean?

A secondary wrapper covering an item.

Overwrap

noun, verb

noun, verb ·Rare ·Advanced level

Noun

1
A secondary wrapper covering an item.
"In recent years, PSI has become a major supplier in the pallet overwrap market."

Verb

1
To wrap in a secondary wrapper. transitive
"Each unit load can also be overwrapped completely in multibags, without any of the usual back-breaking work of manually transferring and restacking, and fitting slings or nets when the load is inverted."
2
To wrap such that the wrapping goes beyond the edge.
"These flaws can include a reed being overwrapped (wrapped past the end of the staple), underwrapped (not wrapped the full length of the staple), or slipped incorrectly (the blades of cane not meeting properly especially if one blade is completely inside the other blade); the cane being crooked on the staple; the cane leaning to the side; or the blank being the wrong length. Cane is expensive and your time is valuable."
3
To provide with too many wrappings.
"Personally, we feel that overwrapping is more harmful than underwrapping in measles as well as in many other conditions."

"In recent years, PSI has become a major supplier in the pallet overwrap market."

From over- + wrap.