Definitions
1.verbTo replace (someone) with someone else; to bring into another's position; especially, to take (a second wife) quickly after the death of a first, or while she is still alive.
2.verbTo bring in or introduce as an addition; to produce, cause, bring on.
3.verbTo cause (especially further disease) in addition (to an existing medical condition).
4.verbTo place over (something or someone); to cover.