As nouns the difference between fanlight and toplight
is that fanlight is a semicircular or semioval window over a door or other window, normally having a fan-like structure of ribs; sometimes hinged to the transom while toplight is (nautical) a lantern or light on the top of a vessel.
fanlight
English
Noun
(
en noun)
a semicircular or semioval window over a door or other window, normally having a fan-like structure of ribs; sometimes hinged to the transom
Derived terms
* dummy fanlight
toplight
English
Alternative forms
* top-light