WordNet (r) 3.0 (2006):

public relations
    n 1: a promotion intended to create goodwill for a person or
         institution [syn: public relations, PR]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "public relations":
   PR, ballyhoo, blurb, bright light, celebrity, common knowledge,
   cry, currency, daylight, eclat, exposure, fame, famousness, glare,
   hoopla, hue and cry, limelight, maximum dissemination, notoriety,
   plug, press notice, public eye, public knowledge, public report,
   publicity, publicity story, publicness, puff, reclame, report,
   spotlight, write-up