subs. phr. (thieves’).—1.  Lead used for roofing purposes: cf. BLUEY = (lead) and BLUE PIGEON FLYER.

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  1887.  Judy, 27 April, 200. A burglar whose particular ‘lay’ was flying the BLUE PIGEON, i.e., stealing lead.

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  2.  (nautical).—The sounding lead.

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