tonelada
/toneˈlada/ · B1 · noun · f
metric ton
🛢️⚖️ tonel (barrel, cask) + -ada (a load of) = a barrel's worth, a ton
A ton was first measured by the cask. A tonel is a big wine barrel, and -ada means 'a load of', as in cucharada (a spoonful). So a tonelada is one barrel's load. English ton comes from tun, an old word for the same kind of cask.