Seaweed or marine algae, particularly as used in Scottish or regional English.
Scottish and Northern English variant of 'weed', with intrusive 'g' sound common in Scots dialect. Refers to the seaweed collected from shores.
In Scottish dialect, 'gweed' isn't trash—it's treasure! Seaweed was (and is) collected for food, fertilizer, and medicine, so this humble word represents centuries of coastal people's practical knowledge.
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