To reveal, uncover, make visible, bring to light, introduce (to).
To submit to an active (mostly dangerous) substance like an allergen, ozone, nicotine, solvent, or to any other stress, in order to test the reaction, resistance, etc.
To make available to other parts of a program, or to other programs.
To abandon, especially an unwanted baby in the wilderness.
To subject photographic film to light thereby recording an image.
To disguise with apparent goodness.
To apply veneer to.
An attractive appearance that covers or disguises one's true nature or feelings.
A thin decorative covering of fine material (usually wood) applied to coarser wood or other material.