Learn how to say Rollover correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word rollover:
1 Finance the extension or transfer of a debt or other financial arrangement:
investments would be returned after four months unless a rollover was requested
group rollover relief
British (in a lottery) the accumulative carry-over of prize money to the following draw:
the lottery jackpot rollover is close to £4 million
2 informal the overturning of a vehicle:
it gives extra protection in side impacts and rollovers
a rollover bar
3a facility on an electronic keyboard enabling one or several keystrokes to be registered correctly while another key is depressed.