To dream that you are peeling something, represents the shedding away of old ways, habits and conditions. It may also mean that you are finally getting rid of and discarding unneeded exterior pretenses.
The potato — to dirty homework; Highway the onions - to a gossip in kitchen.
A peel removed from a fruit or vegetable might represent:
Something cast aside or viewed as unuseful or secondary
A covering that has been removed, revealing what's inside