bladderwrack

== English == === Alternative forms === bladder wrack === Etymology === From bladder +‎ wrack. === Noun === bladderwrack (usually uncountable, plural bladderwracks) Fucus vesiculosus, a seaweed in which iodine was first discovered. ==== Synonyms ==== black tang, rockweed, bladder fucus, sea oak, black tany, cut weed, dyers fucus, red fucus, rock wrack ==== Translations ====