Definitions for jerry-built
Random House Webster's College Dictionary
built cheaply and flimsily; shoddy.
contrived or developed in a haphazard fashion.
Origin of jerry-built:
1865–70; jerry, of uncert. orig.
of inferior workmanship and materials
"mean little jerry-built houses"
Built cheaply and shoddily.
Origin: * A pejorative of unknown origin concerning 'Jerry'
built hastily and of bad materials; as, jerry-built houses