To spoil, break or render ineffective (a rule, plan or agreement).
To abandon, especially an unwanted baby in the wilderness.
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 reveal, uncover, make visible, bring to light, introduce (to).
To subject photographic film to light thereby recording an image.