Word forms: prefabs
1. countable noun A prefab is a house built with parts which have been made in a factory and then quickly put together at the place where the house was built. [mainly British] ⇒ ...some ugly Sixties prefabs. 2. adjective [ADJ n]
A prefab building or structure is one that has been made from parts which were made in a factory and then quickly put together at the place where the structure was built . ⇒ ...a city of 50,000 with prefab concrete high-rise buildings.
COBUILD Advanced English Dictionary. Copyright © Harper Collins Publishers