Dictionary of Ichthyology  

madrague = an anchored pound net used for tuna in the Mediterranean Sea. See also almadabra, mattanaza, matanza, tonnara.

Jean-Pierre HouŽl's "Voyage pittoresque des Isles de Sicile, de Malte et de Lipari" Paris, 1782 from Wikimedia Commons: http://commons.wikimedia.org/wiki/File:La_pesca_del_tonno,_acquaforte_di_Jean-Pierre_Hou%C3%ABl.jpg

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