tangonum

tangonum [cf. ON thang, þang, Jers. Norm. Fr. tangon], kind of seaweed. 1324 communis latro focalium videlicet tangnorum positorum ad desiccandum JustIt 165 r. 18; 1324 communes latrones de focalibus adunatis de wrecco et tangonis positis ad desiccandum Ib.; 1324 de latrocinio focalium videlicet tangnu’ po'it' ad desiccand' Ib. 165 r. 23.