1) Canned 2) Covered with stannum 3) In a can in England 4) Like british sardines 5) Like some kippers 6) Plated with a certain metal 7) Preserved 8) Sealed in a can or jar Found on https://www.crosswordclues.com/clue/tinned
• (a.) Covered, or plated, with tin; as, a tinned roof; tinned iron. • (imp. & p. p.) of Tin • (a.) Packed in tin cases; canned; as, tinned meats. Found on http://thinkexist.com/dictionary/meaning/tinned/
Tinned adjective 1. Covered, or plated, with tin; as, a tinned roof; tinned iron. 2. Packed in tin cases; canned; as, tinned meats. Cassell (Dict. of Cookery). Found on http://www.encyclo.co.uk/webster/T/60