Real Dictionary

indirect object
countable noun: An indirect object is an object which is used with a transitive verb to indicate who benefits from an action or gets something as a result. For example, in 'She gave him her address', 'him' is the indirect object. Compare direct object.

indirect object in American English
the word or words denoting the person or thing indirectly affected by the action of the verb: it generally names the person or thing to which something is given or for which something is done (Ex.: him in “give him the ball,” “do him a favor”)
noun: a word or group of words representing the person or thing with reference to which the action of a verb is performed, in English generally coming between the verb and the direct object and paraphrasable as the object of a preposition, usually to or for, fo

indirect object in British English
noun: a noun, pronoun, or noun phrase indicating the recipient or beneficiary of the action of a verb and its direct object, as John in the sentence I bought John a newspaper