two-cylinder

two-cylinder (not comparable)

1. (of an engine) having two cylinders
   • 1961 March, C. P. Boocock, “The organisation of Eastleigh Locomotive Works”, in Trains Illustrated, page 162:

     There are many at Eastleigh who will agree that, although most components of ex-L.S.W. Urie engines are heavier than their modern counterparts, they are at least relatively simple to work on; a week in the oil bath of a Bulleid Pacific has convinced many of the advantages of simple two-cylinder machines!

• twin-cylinder

• “two-cylinder”, in Collins English Dictionary.