War ‧ ner, Pop /ˈwɔːnəʳ $ ˈwɔːr-/ BrE AmE
(1871–1954) a US ↑ coach (=someone who trains a person or team) in American football who developed a new and successful method of playing the game. His real name was Glenn S. Warner. Football ↑ league s for children are often called Pop Warner leagues.