To take or receive as one's own what is not so naturally.
To take voluntarily (a child of other parents) to be in the place of, or as, one's own child.
To obtain (a pet) from a shelter or the wild.
To take by choice into the scope of one's responsibility.
To select and take or approve.
To beat an opponent ten times in a row.
To accept, support, or take on as one’s own (an idea or a cause).
To become/get married to.