To straighten something that has been rolled, twisted or curled.
Unroll your sleeping bag and spread it on the floor of the tent.
To emerge, be revealed or become apparent; to unfold.
We will have to see how the events unroll.
To replace (a loop in a program) with a repetitive sequence of the individual instructions that the loop would carry out, sometimes used as an optimization.
The process by which something is unrolled.
A pseudoscientific entertainment spectacle at which a mummy was unwrapped.