NUT

Hard-shelled seed (3)

Solution has appeared in 3 crosswords (3 across and 0 down):

• Quick crossword No 16,498 — 2023-03-23 00:00:40
  21A: Hard-shelled seed (3)
• Quick crossword No 16,246 — 2022-06-01 23:00:22
  21A: One with a total addiction? (3)
• Quick crossword No 15,361 — 2019-07-31 23:00:35
  8A: Hard-shelled seed (3)