In article ,
Bill Wright writes:
Not the same thing at all, and I don't know why it comes to mind, but in
the 1970s my uncle had a flat roofed kitchen extension built. The
brickwork joined the existing building at each side. Somehow it rose one
course on its way round. The whole structure was skew-whiff. The back
window was on a distinct slope but the ceiling (I don't know how or why)
was perfectly level, so the bit of wall above the window was visibly
trapezoid.

There's a jargon word that describes this fault in a building,
but I can't remember what it is...

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]