Definition of "Boiler"

Our Patent Museum now forms a portion of "The Boilers," but, although in them, it is not of them.

1866, Saturday Review: Politics, Literature, Science and Art, page 781

The quadrangle, unlike the Boilers (which were later moved to house the Bethnal Green Museum), still stands as part of the Victoria and Albert Museum.

2007, Hannah Gay, The History of Imperial College London, 1907-2007, page 62