Jerusalem lettersn. letters or symbols tattooed on the arm or body, such as pilgrims or visitors to Jerusalem sometimes bore, in testimony or memory of their visit.
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society > faith > artefacts > pilgrim's garb > items of attire > [noun] > token > tattoo
Jerusalem letters1766
1766 H. BrookeFool of Quality II. xi. 188 If heaven should ever bless me with more children,..I have determined to fix some indelible mark upon them, such as that of the Jerusalem-Letters.