BIRETTA

Stiff cap worn by Roman Catholic clergy (7)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,151 — 2022-02-11 00:00:34
  9A: Square cap worn by Roman Catholic clergy (7)
• Quick crossword No 15,214 — 2019-02-11 00:00:06
  5D: Stiff cap worn by Roman Catholic clergy (7)