The category of nouns serving as the indirect object of a verb WordNet 3.0 & Open English WordNet

In grammar, the dative case is a grammatical case used in some languages to indicate the recipient or beneficiary of an action, as in "Maria Jacobo potum dedit", Latin for "Maria gave Jacob a drink". Wikipedia

Grammatical case generally used to indicate the noun to which something is given Wikidata

The form of a noun, pronoun or adjective when it is the indirect object of a verb, OmegaWiki

The dative case. Wiktionary

Case used to express direction towards an indirect object, the recipient or beneficiary of an action, and is generally indicated in English by to (when a recipient) or for (when a beneficiary) with the objective case. The direct object may be either stated or unstated where the indirect object is the beneficiary of the verbal action, but is stated where the indirect object is a recipient. If there is emphasis on the indirect object, the indirect object usually precedes the direct object and is not usually indicated with to or for; said structure is also used when neither object is being emphasized. Wiktionary

Case used to express direction towards an indirect object. Wiktionary (translation)