titular (Adjective) — Of or relating to a legal title to something. ex. "titular rights"
titular (Adjective) — Of or bearing a title signifying status or function. ex. "of titular rank"
titular (Adjective) — Of or pertaining to the title of a work of art. ex. "performed well in the titular (or title) role" ex. "the titular theme of the book"
titular (Adjective) — Of or associated with or bearing a title signifying nobility. ex. "titular dignitaries"
titular (Adjective) — Existing in name only. ex. "the titular head of his party"