1) Closed-class word 2) Containing he, she or it 3) Function word 4) Relating to pronouns 
• (a.) Belonging to, or partaking of the nature of, a pronoun.
Pro·nom'i·nal adjective [ Latin pronominalis : confer French pronominal . See Pronoun .] Belonging to, or partaking of the nature of, a pronoun. 
[adj] - relating to pronouns
adjective relating to pronouns; `pronominal reference`
pertaining to, resembling, derived from, or containing a pronoun: “My” in “my book” is a pronominal adjective. “There” is a pronominal adverb. · noting the coat of arms on a quartered escutcheon: customarily occupying the first quarter and being the original coat of arms of the paternal line.