OPIUM

Narcotic derived from poppies (5)

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

• Quick crossword No 16,565 — 2023-06-08 23:00:43
  5D: Addictive narcotic derived from a poppy (5)
• Quick crossword No 15,981 — 2021-07-26 23:00:16
  21A: Religion is 'the ___ of the people' (Karl Marx) (5)
• Quick crossword No 15,516 — 2020-01-30 00:00:01
  6D: Narcotic derived from poppies (5)