Words: milliard [MW]

Pronunciation: 'mil-"yard, 'mi-lE-"ard
Function: noun
Etymology: French, from Middle French miliart, from mili- (from milion million)
British : a thousand millions -- see NUMBER table

(I was never aware of this until recently, but Merriam-Webster's Number table shows how one billion -- nine zeroes -- for U.S. readers is one milliard to U.K. readers; and thereafter the U.S. one trillion is the U.K. one billion, and so on.)