ABEL

Cain's younger brother (4)

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

• Quick crossword No 15,936 — 2021-06-03 23:00:22
  21D: A son of Adam and Eve (4)
• Quick crossword No 15,494 — 2020-01-04 00:00:16
  10A: The first murder victim? (4)
• Quick crossword No 15,204 — 2019-01-30 00:00:18
  21A: Cain's younger brother (4)