nominative

n. subject case; word in the subject case

adj. of or designating the subject of a verb and the words that agree with it (Grammar)

The nominative case is a grammatical case for a noun, which generally marks the subject of a verb, as opposed to its object or other verb arguments. (Basically, it is a noun that is doing something, usually joined (such as in Latin) with the accusative case.)
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Noun
1. the category of nouns serving as the grammatical subject of a verb
(synonym) nominative case, subject case
(antonym) oblique, oblique case
(hypernym) case, grammatical case
Adjective
1. serving as or indicating the subject of a verb and words identified with the subject of a copular verb; "nominative noun endings"; "predicate nominative"
(pertainym) nominative case, subject case
(classification) grammar
2. named; bearing the name of a specific person; "nominative shares of stock"
(synonym) nominal
(similar) specified
3. appointed by nomination
(synonym) nominated
(similar) appointive, appointed

n. nominative case, showing the subject of a verb, subject case (Grammar)

adj. nominative, of or designating the subject of a verb and the words that agree with it (Grammar)

adj. registered, recorded, certified