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extrados =
The exterior curve or bound-
ary of the visible face of the
arch.
Federal style =
An architectural style in
the post Colonial era in
America, from about
1780 to 1820.
finial =
An ornament which terminates the
point of a spire, pinnacle etc. Also
called
acroterion
, crop, knob pine-
apple and pommel.
fireback =
The back wall of the
fireplace of the fire-
place of heat-resistant
masonry of cast or
wrought metal, not
only decorative but
radiates heat in the
room.
firemark =
In colonial America, a
plaque, usually cast in
lead, affixed to the façade
of a house, indicating that
the owner had contributed
money to the local fire
department.
extrados
Federal style
finial
fireback
firemark