semi-detached

1. not comparableOf a house: joined to another one on one side, having one shared wall.

   In the smaller plans of a "Mansionette near Wimbledon Park," "Semi-detached Houses," and "The Compact House built near Blackheath," we are not favoured with any scale.

   1860 July 28, The Gentleman's Magazine, page 80

   1 more example

   The murderer should be a little man of the professional class — a dentist or a solicitor, say — living an intensely respectable life somewhere in the suburbs, and preferably in a semi-detached house, which will allow the neighbours to hear suspicious sounds through the wall.

   1946, George Orwell, Decline of the English Murder

plural semi-detacheds

1. Such a house.

   Synonyms: duplex, duplex house, semi, semi-detached house, twin house