lake lettuce
n.— «Some might refer to them as moss, pond scum or lake lettuce, which encompasses a wide array of aquatic growth.» —“Weed control curtails two fishing trips” by Steve Ford Courier & Press (Evansville, Illinois) May 4, 2008. (source: Double-Tongued Dictionary)
Further reading
How are lakes named? Does the proper name of a lake come first, as in Candlewood Lake, or does the word Lake precede the proper name, as in Lake Erie. It’s a question that’s long puzzled limnologists, the people who study lakes. The...
In the Tlingit & Haida cultures, there are many stories involving the kushtaka (also spelled kooshdakhaa, kushtahkah, and kooshdaa kaa, and stressed on the final syllable), a being associated with the land otter. The name shows up in several...