I spent four hours waiting for the replacementbus.
Times, Sunday Times (2011)
Many can look forward to engineering works, replacementbuses and reduced timetables on some key routes.
Times, Sunday Times (2011)
Recently I had to use a replacementbus service when trains were not running.
Times, Sunday Times (2006)
Definition of 'bus'
bus
(bʌs)Explore 'bus' in the dictionary
countable noun [oft byNOUN]
A bus is a large motor vehicle which carries passengers from one place to another. Buses drive along particular routes, and you have to pay to travel in them.
Definition of 'replacement'
replacement
(rɪpleɪsmənt)Explore 'replacement' in the dictionary
uncountable noun
If you refer to the replacement of one thing by another, you mean that the second thing takes the place of the first.