fishbelly means the belly of a fish. Lexicurio rates it Sui generis — a strength score of 90 out of 100.
Etymology
From fish + belly.
noun
- The belly of a fish.
- An early kind of cast iron rail for railways, predating the bullhead rail.“Original stone Stockton & Darlington Railway sleepers, thought to be 195 years old, have been installed as close as possible to the route's original starting point. They carry replica fishbelly rails, and the project [...] was part of an initiative by the Brusselton Incline Group to mark the start of the five-year countdown to the S&D bicentenary celebrations in 2025.”