nominal

(grammar) A noun or word group that functions as part of a noun phrase.

(grammar) A part of speech that shares features with nouns and adjectives. (Depending on the language, it may comprise nouns, adjectives, possibly numerals, pronouns, and participles.)

A number (usually natural) used like a name; a numeric code or identifier. (See nominal number on Wikipedia.)

(UK, police jargon) A person listed in the Police National Computer database as having been convicted, cautioned or recently arrested.