How do I solve 8 down in Daily Telegraph Cryptic 31239?

Question

Accepted Answer

8 down reads "One meeting Friday in work?" (8,6 letters); the answer is ROBINSON CRUSOE. It's a double-definition clue: two separate definitions of the same word sit side by side. No wordplay split and no indicators — both halves of the clue define the answer. The full step-by-step breakdown is on this page.

One meeting Friday in work? (8,6)

8D — One meeting Friday in work? (8,6) — ROBINSON CRUSOE