Definition of "unroll"

unroll

verb
third-person singular simple present unrolls, present participle unrolling, simple past and past participle unrolled
1. (transitive) To straighten something that has been rolled, twisted or curled.
2. (intransitive) To emerge, be revealed or become apparent; to unfold.
3. (transitive, programming, software compilation) 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.