jug·ger·naut 
/ˈʤʌgɚˌnɑ:t/ noun
plural jug·ger·nauts /ˈʤʌgɚˌnɑ:t/ noun [count] 1 : something (such as a force, campaign, or movement) that is extremely large and powerful and cannot be stopped
▪ an advertising/political juggernaut 2 Brit : a very large, heavy truck —called also juggernaut lorry
▪ an advertising/political juggernaut
