Dictionary of Ichthyology  

trammel net = a net made up of a fine-meshed net between two large-meshed nets extended between two ropes and set up in a tidal current or river, the fish being trapped by becoming wrapped in the fine-meshed net that forms bags around the fish.

From Umali, A. F. 1950. Guide to the classification of fishing gear in the Philippines. Research Report 17, Fish and Wildlife Service, U.S. Department of the Interior, Washington.

Canadian Museum of Nature