SALT

Sodium chloride (4)

Solution has appeared in 3 crosswords (2 across and 1 down):

• Quick crossword No 16,347 — 2022-09-27 23:00:50
  19A: Sailor — NaCl, say (4)
• Quick crossword No 16,203 — 2022-04-12 23:00:35
  20D: It's used to preserve and season food (4)
• Quick crossword No 15,244 — 2019-03-18 00:00:22
  1A: Sodium chloride (4)