- patteran
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Any of several coded signs left along a road or on a non-Roma house by one Rom comrade to another. The most common ones consist of crossed sprigs (usually of different trees or shrubs) indicating, for example, a direction travelled.
Follow the Romany Patteran / Sheer to the Austral Light, / Where the besom of God is the wild South wind, / Sweeping the sea-floors white.
Wikipedia foundation.