From Longman Dictionary of Contemporary EnglishPurple HeartˌPurple ˈHeart noun [countable] PMa medal given to US soldiers who have been wounded
Examples from the Corpus
Purple Heart• I suppose he got a Purple Heart.• Some general came and pinned a Purple Heart on my pillow.• Professional football and the Purple Heart are just two examples of where our values have declined.• The Purple Heart is the most underrated decoration given by the military. 