also: なのりそ
noun
Sargassum fulvellum; edible brown seaweed
A specific species of brown alga used in Japanese cuisine; often written in katakana as ホンダワラ.
ホンダワラは味噌汁の具として使われることがある。
Hondawara is sometimes used as an ingredient in miso soup.
海岸にホンダワラがたくさん打ち上げられていた。
A lot of hondawara seaweed had washed up on the shore.
Archaic kanji spelling with the obsolete reading なのりそ (or なのりそも).
The origin of the name ホンダワラ is uncertain. The kanji spellings 馬尾藻 and 神馬藻 are likely ateji based on the reading ほんだわら, while 莫告藻 is an archaic name with the obsolete reading なのりそ.