juggernaut
Concise Oxford English Dictionary © 2008 Oxford University Press:
juggernaut /ˈdʒʌgənɔːt/
▶noun
- 1 Brit. a large heavy vehicle, especially an articulated truck.
- 2 a huge and overwhelming force.
– origin C19: via Hindi from Sanskrit Jagannātha ‘Lord of the world’, the name of an image of the Hindu god Krishna carried in procession on a heavy chariot.
'juggernaut' also found in these Oxford entries:

