chok·er 
/ˈtʃoʊkɚ/ noun
plural chok·ers /ˈtʃoʊkɚ/ noun [count] 1 : a necklace that fits closely around the neck 2 informal : a person who fails to do something because of nervousness : a person who chokes
▪ They called him a choker when he missed the shot that would have won the game.
▪ They called him a choker when he missed the shot that would have won the game.
