How do I solve 30 across in Daily Telegraph Cryptic 31260?

Question

Accepted Answer

30 across reads "I throw mud at Sicilian, say" (8 letters); the answer is ISLANDER. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

I throw mud at Sicilian, say (8)

30A — I throw mud at Sicilian, say (8) — ISLANDER