Fishbelly

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
The belly of a fish.
2
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."

Example

"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."

Etymology

From fish + belly.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.