Source : Webster's Revised Unabridged Dictionary (1913)

Nationalist \Na"tion*al*ist\, n.
   One who advocates national unity and independence; one of a
   party favoring Irish independence.

Source : WordNet®

nationalist
     n 1: one who loves and defends his or her country [syn: {patriot}]
     2: an advocate of national independence of or a strong national
        government

nationalist
     adj : devotion to the interests or culture of a particular nation
           including promoting the interests of one country over
           those of others; "nationalist aspirations"; "minor
           nationalistic differences" [syn: {nationalistic}]