lift the lid on

:  heavens, sky

:  to raise from a lower to a higher position :  elevate

:  to raise in rank or condition

:  to raise in rate or amount

:  the amount that may be lifted at one time :  load

:  the action or an instance of lifting

:  the action or an instance of rising

:  a movable cover for the opening of a hollow container (such as a vessel or box)

:  eyelid

:  the operculum in mosses

:  to cover or supply with a lid