Small, Often-Semicircular Window Over a Door
This page is the CodyCross answer for the clue below from Prehistory, Group 1254, Puzzle 3 (Ring of Brodgar).
Question is: Small, Often-Semicircular Window Over a Door
and the answer is: FANLIGHT
Word Meaning:
FANLIGHT — (architecture) A semicircular or semioval window over a door or other window, normally having a fan-like structure of ribs; sometimes hinged to the transom.
Definitions from Wiktionary.