Longman Dictionary of Contemporary English
single-decker
noun
EXAMPLES FROM CORPUS
▪ In 1968 the fleet was renumbered, with single-deckers taking 600-series numbers and double-deckers 700-series.
▪ The single-deckers became known appropriately as railcoaches, a name which placed them firmly to the forefront of modern transport.
▪ With the stairs enclosed by wooden shutters, they could operate in bad weather as single-deckers.
Usage examples of "single-decker".
An intriguing single-decker medical-looking bldg. with a sort of tympanum over the smoked-glass door with an ad that says COMPLETE DESTRUCTION OF CONFIDENTIAL RECORDS that Gately's always wanted to poke the old head in and have a look at what on earth they might be up to in there.